Company lists · Data refreshed September 2026

Top 25 Labor unions transportation sector based in the United States

Name: Labor unions transportation sector based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 105 companies tracked

RevenueBase identified 105 labor unions transportation sector headquartered in the United States as of September 2026 and tracks 14,490 professional contacts across them, including 1,048 with verified work emails. Washington is the largest hub.

This list covers labor unions transportation sector headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

105Companies

14,490Contacts tracked

1,048Verified emails

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The 25 largest labor unions transportation sector based in the United States

Ranked by team size

Top 25 of 105 labor unions transportation sector based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to labor unions transportation sector: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	International Brotherhood Of Electrical Workers Ibew	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	10001+	9,357 contacts →
	Indirect evidence “The IBEW represents 901,831 active.” Source: RevenueBase Database · checked Sep 17, 2026
2	LIUNA	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	10001+	1,147 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
3	International Brotherhood Of Teamsters	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	501-1,000	1,052 contacts →
	Partial evidence “The Teamsters are one of North America’s largest, most diverse unions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Communications Workers Of America	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	501-1,000	595 contacts →
	Partial evidence “CWA represents workers in both private and public sectors.” Source: RevenueBase Database · checked Sep 17, 2026
5	Smart Transportation Division	Partial evidence	Independence, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	227 contacts →
	Partial evidence “We are the SMART Transportation Division, an AFL-CIO affiliate headquartered near Cleveland, Ohio.” Source: RevenueBase Database · checked Sep 17, 2026
6	Brotherhood Of Locomotive Engineers And Trainmen	Indirect evidence	Independence, OH, United StatesHQ checked Sep 17, 2026	11-50	141 contacts →
	Indirect evidence “The Brotherhood of Locomotive Engineers and Trainmen exists to promote and protect the rights, interests, and safety of its members through solidarity, aggressive representation…” Source: RevenueBase Database · checked Sep 17, 2026
7	Seiu Local 1	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	51-200	81 contacts →
	Indirect evidence “SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Source: RevenueBase Database · checked Sep 17, 2026
8	Unite Here Local 11	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 17, 2026	11-50	77 contacts →
	Indirect evidence “Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Source: RevenueBase Database · checked Sep 17, 2026
9	Ibew Local 212	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	52 contacts →
	Indirect evidence “International Brotherhood of Electrical Workers The IBEW represents approximately active members and retirees who work in a wide variety of fields, including utilities…” Source: RevenueBase Database · checked Sep 17, 2026
10	United Service Workers Union, Iujat	Strong evidence	New Rochelle, NY, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Strong evidence “The United Service Workers Union, IUJAT (USWU) can trace its origins back to a small independent labor organization, representing approximately members that was created in the…” Source: RevenueBase Database · checked Sep 17, 2026
11	Transport Workers Union Of America International Union	Indirect evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	n/a	39 contacts →
	Indirect evidence “With more than members nationwide across air, rail, gaming and transit divisions, TWU moves America.” Source: RevenueBase Database · checked Sep 17, 2026
12	Transportation Communications Union IAM	Strong evidence	Rockville, MD, United StatesHQ checked Sep 17, 2026	201-500	35 contacts →
	Strong evidence “The Transportation Communications Union/IAM represents approximately members in the railroad industry.” Source: RevenueBase Database · checked Sep 17, 2026
13	Teamsters Local 769	Strong evidence	North Miami, FL, United StatesHQ checked Sep 17, 2026	11-50	27 contacts →
	Strong evidence “Teamsters Local 769 is a Labor Union affiliated with the International Brotherhood of Teamsters and represents Teamster brothers and sisters in South Florida, from Orlando to Key…” Source: RevenueBase Database · checked Sep 17, 2026
14	Iatse Local 484	Indirect evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	1-10	25 contacts →
	Indirect evidence “IATSE LOCAL 484 is a company based out of 4818 E BEN WHITE BLVD, AUSTIN, Texas, United States.” Source: RevenueBase Database · checked Sep 17, 2026
15	United Mine Workers Of America	Partial evidence	Triangle, VA, United StatesHQ checked Sep 17, 2026	51-200	23 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
16	Jack Gray Transport	Partial evidence	Gary, IN, United StatesHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “Midwest Premier Transportation provider of bulk materials for over 50 years.” Source: RevenueBase Database · checked Sep 17, 2026
17	Teamsters Local 89	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Source: RevenueBase Database · checked Sep 17, 2026
18	American Train Dispatchers Association	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 17, 2026	1-10	10 contacts →
	Indirect evidence “American Train Dispatchers Assn.” Source: RevenueBase Database · checked Sep 17, 2026
19	Transportation Trades Department, Afl-Cio	Strong evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “The Transportation Trades Department (TTD) of the AFL-CIO is America's largest transportation labor federation, representing 39 unions and millions of workers across aviation…” Source: RevenueBase Database · checked Sep 17, 2026
20	Ufcw Local 227	Partial evidence	Louisville, KY, United StatesHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
21	Utility Workers Of America	Indirect evidence	Farmington Hills, MI, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Teamsters Local 14	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Teamsters Local 14 is a transportation/trucking/railroad company based out of 2250 S Rancho Dr, Las Vegas, NV, United States.” Source: RevenueBase Database · checked Sep 17, 2026
23	Pennsylvania Afl-Cio	Indirect evidence	Shippensburg, PA, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	National Conference Of Firemen & Oilers	Strong evidence	Ashland, KY, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “National Conference of Firemen & Oilers is a labor union that represents a variety of workers in the private and public sector including building services, food processing…” Source: RevenueBase Database · checked Sep 17, 2026
25	IAM District Lodge 751	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	51-200	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: labor unions transportation sector. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names labor unions transportation sector.
Partial evidence: Its own public description names part of labor unions transportation sector, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name labor unions transportation sector. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 105 labor unions transportation sector based in the United States

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Labor unions transportation sector based in the United States at a glance

As of Sep 17, 2026

7.2%Verified-email coverage

138.0Average contacts per company

11-50Median size (employees)

9.5%Largest-city concentration · Washington

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 105 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among labor unions transportation sector, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “labor unions transportation sector”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names labor unions transportation sector), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among labor unions transportation sector, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,048 across the full list. 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 September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names labor unions transportation sector, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many labor unions transportation sector are there based in the United States?

RevenueBase identified 105 labor unions transportation sector headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

International Brotherhood Of Electrical Workers Ibew, headquartered in Washington, tops this list with the largest team on record.

Which city has the most labor unions transportation sector?

Washington leads with 10 headquartered companies, followed by New York (4) and Chicago (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,048 verified decision-maker contacts tracked across these 105 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.