Company lists · Data refreshed November 2026
Top 25 Labor unions based in the United States
RevenueBase identified 123 company matches for labor unions associated with the United States as of November 2026 and tracks 16,368 professional contacts across them, including 1,569 with verified work emails. Washington is the largest hub.
This list covers company matches for labor unions associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest labor unions based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,689 contacts → | ||||
Exact match “The IBEW represents 901,831 active.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 1,204 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 1,094 contacts → | ||||
Exact match “The Teamsters are one of North America’s largest, most diverse unions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 1,032 contacts → | ||||
Exact match “AFSCME is the nation’s largest and fastest growing public services employees union.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 619 contacts → | ||||
Exact match “32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 602 contacts → | ||||
Exact match “The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 119 contacts → | ||||
Exact match “The National Treasury Employees Union (NTEU) is the largest independent federal employees union, representing workers in 37 agencies and departments across the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 113 contacts → | ||||
Exact match “We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 94 contacts → | ||||
Exact match “SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 94 contacts → | ||||
Exact match “Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 56 contacts → | ||||
Exact match “UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 48 contacts → | ||||
Exact match “Oregon AFSCME Council 75 represents over workers statewide in both public and private sector and is one of the fastest growing unions in Oregon.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 38 contacts → | ||||
Exact match “The National Association of Government Employees (NAGE) is an organization of members united by the belief in the dignity and worth of workers and the services they provide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 33 contacts → | ||||
Exact match “The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 20 contacts → | ||||
Exact match “Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 19 contacts → | ||||
Exact match “Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 17 contacts → | ||||
Exact match “The passage of the Taft-Hartley Act led to the first international, independent guard union, The United Plant Guard Workers of America (UPGWA) which was certified by the NLRB in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 16 contacts → | ||||
Exact match “The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 15 contacts → | ||||
Exact match “OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 15 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 13 contacts → | ||||
Exact match “Representing members for over 70 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 12 contacts → | ||||
Exact match “We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 11 contacts → | ||||
Exact match “UPSEU" is the acronym for United Public Service Employees Union representing over public sector workers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 11 contacts → | ||||
Exact match “The Barrault Mission is simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “labor unions”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 123 labor unions based in the United States
See the full list, filter by size, metro and specialty, and access 1,569 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Labor unions based in the United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 123 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “labor unions” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,569 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “labor unions”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many labor unions are there based in the United States?
RevenueBase identified 123 company matches for labor unions associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
International Brotherhood Of Electrical Workers Ibew tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most labor unions?
Washington leads with 8 company records, followed by San Jose (4) and Savannah (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,569 professional contacts with verified work emails tracked across these 123 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 123 labor unions based in the United States. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- New lists
- Labor unions based in Canada
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
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Company intelligence · public preview
Top 25 labor unions based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 123 matching company records for labor unions based in the United States, with 16,368 tracked contacts and 1,569 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 labor unions based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 9,689 contacts → |
“The IBEW represents 901,831 active.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  LIUNAliuna.orgHQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 1,204 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 |  International Brotherhood Of Teamstersteamster.orgHQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,094 contacts → |
“The Teamsters are one of North America’s largest, most diverse unions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Afscmeafscme.orgHQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,032 contacts → |
“AFSCME is the nation’s largest and fastest growing public services employees union.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  32bj Seiuseiu32bj.orgHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 619 contacts → |
“32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  AFTaft.orgHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 602 contacts → |
“The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 119 contacts → |
“The National Treasury Employees Union (NTEU) is the largest independent federal employees union, representing workers in 37 agencies and departments across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Seiu Local 503seiu503.orgHQ: Salem, OR, United StatesReported employees: 51-200 | Salem, OR, United States | 51-200 | Exact match | 113 contacts → |
“We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Seiu Local 1seiu1.orgHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 94 contacts → |
“SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Unite Here Local 11unitehere11.orgHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 94 contacts → |
“Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ufcw 8-Golden Stateufcw8.orgHQ: Roseville, CA, United StatesReported employees: 51-200 | Roseville, CA, United States | 51-200 | Exact match | 56 contacts → |
“UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Oregon Afscme Council 75oregonafscme.orgHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 48 contacts → |
“Oregon AFSCME Council 75 represents over workers statewide in both public and private sector and is one of the fastest growing unions in Oregon.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Quincy, MA, United StatesReported employees: 51-200 | Quincy, MA, United States | 51-200 | Exact match | 38 contacts → |
“The National Association of Government Employees (NAGE) is an organization of members united by the belief in the dignity and worth of workers and the services they provide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  United Mine Workers Of Americaumwa.orgHQ: Triangle, VA, United StatesReported employees: 51-200 | Triangle, VA, United States | 51-200 | Exact match | 33 contacts → |
“The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  LOS Angeles County Federation Of Labor, Afl-Ciothelafed.orgHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 20 contacts → |
“Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Teamsters Local 89teamsters89.comHQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 19 contacts → |
“Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  SPFPAspfpa.orgHQ: Roseville, MI, United StatesReported employees: 201-500 | Roseville, MI, United States | 201-500 | Exact match | 17 contacts → |
“The passage of the Taft-Hartley Act led to the first international, independent guard union, The United Plant Guard Workers of America (UPGWA) which was certified by the NLRB in…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ufcw Local 227ufcw227.orgHQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 16 contacts → |
“The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Opeiu Local 8opeiu8.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Seiu Local 500seiu500.org HQ: Rockville, MD, United StatesReported employees: 11-50 | Rockville, MD, United States | 11-50 | Exact match | 15 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  Ufcw Local 1059ufcw1059.comHQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 |  Local 1102local1102.orgHQ: Woodbury, NY, United StatesReported employees: 11-50 | Woodbury, NY, United States | 11-50 | Exact match | 13 contacts → |
“Representing members for over 70 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Teamsters Local 166teamsters166.comHQ: Bloomington, CA, United StatesReported employees: 11-50 | Bloomington, CA, United States | 11-50 | Exact match | 12 contacts → |
“We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  UPSEUupseu.orgHQ: Ronkonkoma, NY, United StatesReported employees: 11-50 | Ronkonkoma, NY, United States | 11-50 | Exact match | 11 contacts → |
“UPSEU" is the acronym for United Public Service Employees Union representing over public sector workers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Barrault And Associates LLCbarraultlaw.comHQ: Milton, MA, United StatesReported employees: 1-10 | Milton, MA, United States | 1-10 | Exact match | 11 contacts → |
“The Barrault Mission is simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 123 company matches
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Labor unions: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
121 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 123 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for labor unions?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many labor unions did RevenueBase find based in the United States?
The saved snapshot records 123 matching company records, 16,368 tracked contacts and 1,569 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Labor unions by geography
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 labor unions based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/labor-unions/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Labor unions based in Canada
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 labor unions based in the United States
RevenueBase records 123 matching company records for labor unions based in the United States, with 16,368 tracked contacts and 1,569 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 labor unions based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 9,689 contacts → |
“The IBEW represents 901,831 active.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | LIUNAliuna.org HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 1,204 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | International Brotherhood Of Teamstersteamster.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,094 contacts → |
“The Teamsters are one of North America’s largest, most diverse unions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Afscmeafscme.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,032 contacts → |
“AFSCME is the nation’s largest and fastest growing public services employees union.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 32bj Seiuseiu32bj.org HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 619 contacts → |
“32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | AFTaft.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 602 contacts → |
“The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 119 contacts → |
“The National Treasury Employees Union (NTEU) is the largest independent federal employees union, representing workers in 37 agencies and departments across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Seiu Local 503seiu503.org HQ: Salem, OR, United StatesReported employees: 51-200 | Salem, OR, United States | 51-200 | Exact match | 113 contacts → |
“We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Seiu Local 1seiu1.org HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 94 contacts → |
“SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Unite Here Local 11unitehere11.org HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 94 contacts → |
“Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ufcw 8-Golden Stateufcw8.org HQ: Roseville, CA, United StatesReported employees: 51-200 | Roseville, CA, United States | 51-200 | Exact match | 56 contacts → |
“UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Oregon Afscme Council 75oregonafscme.org HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 48 contacts → |
“Oregon AFSCME Council 75 represents over workers statewide in both public and private sector and is one of the fastest growing unions in Oregon.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Quincy, MA, United StatesReported employees: 51-200 | Quincy, MA, United States | 51-200 | Exact match | 38 contacts → |
“The National Association of Government Employees (NAGE) is an organization of members united by the belief in the dignity and worth of workers and the services they provide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | United Mine Workers Of Americaumwa.org HQ: Triangle, VA, United StatesReported employees: 51-200 | Triangle, VA, United States | 51-200 | Exact match | 33 contacts → |
“The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | LOS Angeles County Federation Of Labor, Afl-Ciothelafed.org HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 20 contacts → |
“Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Teamsters Local 89teamsters89.com HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 19 contacts → |
“Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | SPFPAspfpa.org HQ: Roseville, MI, United StatesReported employees: 201-500 | Roseville, MI, United States | 201-500 | Exact match | 17 contacts → |
“The passage of the Taft-Hartley Act led to the first international, independent guard union, The United Plant Guard Workers of America (UPGWA) which was certified by the NLRB in…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ufcw Local 227ufcw227.org HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 16 contacts → |
“The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Opeiu Local 8opeiu8.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Seiu Local 500seiu500.org HQ: Rockville, MD, United StatesReported employees: 11-50 | Rockville, MD, United States | 11-50 | Exact match | 15 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Ufcw Local 1059ufcw1059.com HQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Local 1102local1102.org HQ: Woodbury, NY, United StatesReported employees: 11-50 | Woodbury, NY, United States | 11-50 | Exact match | 13 contacts → |
“Representing members for over 70 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Teamsters Local 166teamsters166.com HQ: Bloomington, CA, United StatesReported employees: 11-50 | Bloomington, CA, United States | 11-50 | Exact match | 12 contacts → |
“We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | UPSEUupseu.org HQ: Ronkonkoma, NY, United StatesReported employees: 11-50 | Ronkonkoma, NY, United States | 11-50 | Exact match | 11 contacts → |
“UPSEU" is the acronym for United Public Service Employees Union representing over public sector workers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Barrault And Associates LLCbarraultlaw.com HQ: Milton, MA, United StatesReported employees: 1-10 | Milton, MA, United States | 1-10 | Exact match | 11 contacts → |
“The Barrault Mission is simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 123 company matches
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Labor unions: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
121 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 123 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for labor unions?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many labor unions did RevenueBase find based in the United States?
The saved snapshot records 123 matching company records, 16,368 tracked contacts and 1,569 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Labor unions by geography
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Cite this list
RevenueBase Data Team. Top 25 labor unions based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/labor-unions/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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