Company lists · Data refreshed September 2026

Top 25 Chambers of commerce based in the United States

Name: Chambers of commerce based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 2,507 companies tracked

RevenueBase identified 2,507 chambers of commerce headquartered in the United States as of September 2026 and tracks 16,369 professional contacts across them, including 4,881 with verified work emails. Chicago is the largest hub.

This list covers chambers of commerce 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 19, 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 19, 2026 86% judged on-target in blind review

2,507Companies

16,369Contacts tracked

4,881Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest chambers of commerce based in the United States

Ranked by team size

Top 25 of 2,507 chambers of commerce based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to chambers of commerce: 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	City Of Tracy	Indirect evidence	Tracy, CA, United StatesHQ checked Sep 19, 2026	501-1,000	332 contacts →
	Indirect evidence “Tracy is a community where neighbors and local merchants greet you by name and the welcoming never stops.” Source: RevenueBase Database · checked Sep 19, 2026
2	The Chamber Of Commerce For Greater Philadelphia	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	51-200	129 contacts →
	Strong evidence “The Chamber of Commerce for Greater Philadelphia brings area businesses and civic leaders together to promote growth and create opportunity in our region.” Source: RevenueBase Database · checked Sep 19, 2026
3	Signpost	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	114 contacts →
	Indirect evidence “Signpost envisions a world of local businesses, large and small, thriving through relevant and lasting connections with customers.” Source: RevenueBase Database · checked Sep 19, 2026
4	Greater Cleveland Partnership	Strong evidence	Cleveland, OH, United StatesHQ checked Sep 19, 2026	51-200	102 contacts →
	Strong evidence “Greater Cleveland Partnership (GCP) is the region’s leading economic development organization and with over members, the largest metropolitan chamber of commerce in the nation.” Source: RevenueBase Database · checked Sep 19, 2026
5	MMAC	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 19, 2026	11-50	90 contacts →
	Partial evidence “Metropolitan Milwaukee Association of Commerce’s (MMAC) vision is to create a globally competitive region that fosters high-value employment to sustain a vibrant quality of life…” Source: RevenueBase Database · checked Sep 19, 2026
6	Centerstate CEO	Strong evidence	Syracuse, NY, United StatesHQ checked Sep 19, 2026	51-200	84 contacts →
	Strong evidence “CenterState CEO is an independent and forward thinking economic development strategist, a business leadership organization and chamber of commerce; dedicated to the success of its…” Source: RevenueBase Database · checked Sep 19, 2026
7	City Of Midlothian	Indirect evidence	Midlothian, TX, United StatesHQ checked Sep 19, 2026	201-500	84 contacts →
	Indirect evidence “Located on the emerging economic powerhouse Highway 287 Corridor, Midlothian presents a business friendly environment that companies seek but cannot often find in the Metroplex.” Source: RevenueBase Database · checked Sep 19, 2026
8	Gwinnett Chamber Of Commerce	Indirect evidence	Duluth, GA, United StatesHQ checked Sep 19, 2026	11-50	78 contacts →
	Indirect evidence “Our mission is to champion business.” Source: RevenueBase Database · checked Sep 19, 2026
9	Indiana Chamber Of Commerce	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 19, 2026	11-50	73 contacts →
	Partial evidence “The Indiana Chamber partners with members and investors – representing over four million Hoosiers – to achieve the mission of cultivating a world-class environment, which provides…” Source: RevenueBase Database · checked Sep 19, 2026
10	Columbus Chamber Of Commerce	Strong evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	11-50	66 contacts →
	Strong evidence “The Columbus Chamber of Commerce is the epicenter of the Columbus Region business community.” Source: RevenueBase Database · checked Sep 19, 2026
11	City Of Texarkana, Texas	Indirect evidence	Texarkana, TX, United StatesHQ checked Sep 19, 2026	201-500	66 contacts →
	Indirect evidence “Our community is rich with opportunities for shopping, dining, arts, history, entertainment, business, and more.” Source: RevenueBase Database · checked Sep 19, 2026
12	Greater Boston Chamber Of Commerce	Strong evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	65 contacts →
	Strong evidence “The Greater Boston Chamber of Commerce is an independent, non-profit organization that is the convener, voice and advocate of our diverse and collaborative membership who drive…” Source: RevenueBase Database · checked Sep 19, 2026
13	Grand Rapids Chamber	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 19, 2026	11-50	65 contacts →
	Partial evidence “The Grand Rapids Chamber is where West Michigan's business community comes together.” Source: RevenueBase Database · checked Sep 19, 2026
14	Greater Omaha Chamber	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 19, 2026	51-200	64 contacts →
	Indirect evidence “We advocate for a healthy business climate where our member companies can prosper and build a solid reputation.” Source: RevenueBase Database · checked Sep 19, 2026
15	Greenville Chamber	Partial evidence	Greenville, SC, United StatesHQ checked Sep 19, 2026	11-50	62 contacts →
	Partial evidence “The Greenville Chamber is a 136-year-old business and economic development organization that connects people, advocates for businesses, and accelerates business and regional…” Source: RevenueBase Database · checked Sep 19, 2026
16	Greater Green BAY Chamber	Indirect evidence	Green Bay, WI, United StatesHQ checked Sep 19, 2026	11-50	59 contacts →
	Indirect evidence “You’re building something important-whether it’s a business, a team, or your own career.” Source: RevenueBase Database · checked Sep 19, 2026
17	Greater Phoenix Chamber	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 2026	11-50	57 contacts →
	Partial evidence “Growing Greater Phoenix since Through service to a broad, diverse membership base, the Greater Phoenix Chamber steadfastly serves as the voice of business and a champion of growth.” Source: RevenueBase Database · checked Sep 19, 2026
18	Greater Kansas City Chamber Of Commerce	Strong evidence	Kansas City, MO, United StatesHQ checked Sep 19, 2026	11-50	56 contacts →
	Strong evidence “The Greater Kansas City Chamber of Commerce is a membership organization that represents more than 2,200 businesses and their employees across 13 counties in the Greater Kansas…” Source: RevenueBase Database · checked Sep 19, 2026
19	Three Rivers Planning & Development District	Indirect evidence	Pontotoc, MS, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Three Rivers Planning & Development District is a private, non-profit organization formed in 1971 by local government entities and business leaders to promote overall economic…” Source: RevenueBase Database · checked Sep 19, 2026
20	City Of York, PA	Indirect evidence	York, PA, United StatesHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “About the City of York: Revolutionary Place To Do Business Based on its demographics, geography, business outlook, tax incentives, extraordinary value, and quality of life, York…” Source: RevenueBase Database · checked Sep 19, 2026
21	Greater Akron Chamber	Partial evidence	Akron, OH, United StatesHQ checked Sep 19, 2026	11-50	54 contacts →
	Partial evidence “The Greater Akron Chamber drives economic growth and prosperity for Greater Akron by supporting the success of the business community and acting as a convener of stakeholders on…” Source: RevenueBase Database · checked Sep 19, 2026
22	SAN Diego Regional Chamber Of Commerce	Strong evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Strong evidence “The San Diego Regional Chamber of Commerce is a nonprofit membership organization that helps provide a voice for San Diego businesses through advocacy, member-to-member…” Source: RevenueBase Database · checked Sep 19, 2026
23	Greater Miami Chamber Of Commerce	Strong evidence	Miami, FL, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Strong evidence “The Greater Miami Chamber of Commerce is the proud champion for the Greater Miami Business Community and serves as a catalyst for solutions to the problems that businesses face.” Source: RevenueBase Database · checked Sep 19, 2026
24	Huntsville Madison County Chamber	Partial evidence	Huntsville, AL, United StatesHQ checked Sep 19, 2026	11-50	50 contacts →
	Partial evidence “The Huntsville/Madison County Chamber, located in Huntsville, Alabama, is an organization of businesses, professionals and local leaders working to ensure a secure and sustainable…” Source: RevenueBase Database · checked Sep 19, 2026
25	Springfield Area Chamber Of Commerce	Strong evidence	Springfield, MO, United StatesHQ checked Sep 19, 2026	11-50	49 contacts →
	Strong evidence “The mission of the Springfield Area Chamber of Commerce is to serve as the principal advocate for business in partnership with the community; support and assist existing…” Source: RevenueBase Database · checked Sep 19, 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: chambers of commerce. 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 chambers of commerce.
Partial evidence: Its own public description names part of chambers of commerce, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name chambers of commerce. 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 2,507 chambers of commerce based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,881 reachable decision-makers.

Free signup · no credit card

View the full list →

Chambers of commerce based in the United States at a glance

As of Sep 19, 2026

29.8%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Chicago

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,172

11-50

243

51-200

201-500

501-1,000

1,001-5,000

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 2,507 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 chambers of commerce, 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 “chambers of commerce”. 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 chambers of commerce), 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 chambers of commerce, 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, 4,881 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 19, 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 chambers of commerce, 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 chambers of commerce are there based in the United States?

RevenueBase identified 2,507 chambers of commerce 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?

City Of Tracy, headquartered in Tracy, tops this list with the largest team on record.

Which city has the most chambers of commerce?

Chicago leads with 23 headquartered companies, followed by New York (15) and Miami (11).

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 4,881 verified decision-maker contacts tracked across these 2,507 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,507 chambers of commerce based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Chambers of commerce by geography

Browse the directory

Browse: Companies home · All United States lists · All Chambers of commerce lists · New lists

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.