Company lists · Data refreshed November 2026

Top 25 Labor union organizations based in the United States

RevenueBase identified 115 company matches for labor union organizations associated with the United States as of November 2026 and tracks 15,680 professional contacts across them, including 1,405 with verified work emails. Washington is the largest hub.

This list covers company matches for labor union organizations 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
115Companies
15,680Contacts tracked
1,405Verified emails
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The 25 largest labor union organizations based in the United States

Ranked by team size
Top 25 of 115 company matches for labor union organizations based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202610001+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
2Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202610001+1,204 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026501-1,0001,094 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
4Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026501-1,000631 contacts →

Exact match

“CWA represents workers in both private and public sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500619 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
6Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026201-500602 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
7Exact matchSalem, OR, United StatesHQ recorded Nov 6, 202651-200113 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
8Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202651-20094 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
9Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202611-5094 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
10Exact matchRoseville, CA, United StatesHQ recorded Nov 6, 202651-20056 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
11Exact matchTriangle, VA, United StatesHQ recorded Nov 6, 202651-20033 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
12Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“The National Federation of Federal Employees (NFFE) is a national union representing approximately blue and white collar government workers across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202651-20020 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
14Exact matchLouisville, KY, United StatesHQ recorded Nov 6, 202611-5019 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
15Exact matchLouisville, KY, United StatesHQ recorded Nov 6, 202611-5016 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
16Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5015 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
17Exact matchColumbus, OH, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBloomington, CA, United StatesHQ recorded Nov 6, 202611-5012 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
19Exact matchRonkonkoma, NY, United StatesHQ recorded Nov 6, 202611-5011 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
20Exact matchMilton, MA, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“The Barrault Mission is simple.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNew Hyde Park, NY, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOrange, CA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchTowson, MD, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“UFCW Local 27 represents more than members in multiple industries across Delaware, Maryland, Pennsylvania, Virginia and West Virginia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchShippensburg, PA, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTacoma, WA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“We are 7500 members strong and growing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 115 labor union organizations based in the United States

See the full list, filter by size, metro and specialty, and access 1,405 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Labor union organizations based in the United States at a glance

As of Nov 6, 2026
9.0%Verified-email coverage
136.3Average contacts per company
11-50Median size (employees)
7.0%Largest-city concentration · Washington
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
31
51-200
18
201-500
8
501-1,000
4
1,001-5,000
2
10001+
4

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 115 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 union organizations” 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 1,405 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 union organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many labor union organizations are there based in the United States?

RevenueBase identified 115 company matches for labor union organizations 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 union organizations?

Washington leads with 8 company records, followed by San Jose (4) and New York (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 1,405 professional contacts with verified work emails tracked across these 115 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.

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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.