Company lists · Data refreshed September 2026

Top 25 Online marketplaces based in the United States

Name: Online marketplaces based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 2,696 companies tracked

RevenueBase identified 2,696 online marketplaces headquartered in the United States as of September 2026 and tracks 929,106 professional contacts across them, including 71,755 with verified work emails. New York is the largest hub.

This list covers online marketplaces 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 20, 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 20, 2026 86% judged on-target in blind review

2,696Companies

929,106Contacts tracked

71,755Verified emails

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The 25 largest online marketplaces based in the United States

Ranked by team size

Top 25 of 2,696 online marketplaces based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to online marketplaces: 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	Amazon	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	10001+	805,810 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
2	EBAY	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	10001+	20,791 contacts →
	Indirect evidence “At eBay, we create pathways to connect millions of sellers and buyers in more than 190 markets around the world.” Source: RevenueBase Database · checked Sep 20, 2026
3	ETSY	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	6,680 contacts →
	Partial evidence “Etsy is the global marketplace for unique and creative goods.” Source: RevenueBase Database · checked Sep 20, 2026
4	Carvana	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 20, 2026	10001+	6,413 contacts →
	Partial evidence “Carvana (NYSE: CVNA) is an industry pioneer for buying and selling used vehicles online.” Source: RevenueBase Database · checked Sep 20, 2026
5	Walmart Marketplace	Partial evidence	Bentonville, AR, United StatesHQ checked Sep 20, 2026	5,001-10,000	4,007 contacts →
	Partial evidence “Walmart Marketplace connects you to millions of customers across categories, with the tools, insights, and support to grow with confidence.” Source: RevenueBase Database · checked Sep 20, 2026
6	Market America, INC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 20, 2026	n/a	3,475 contacts →
	Indirect evidence “About Market America Worldwide \| SHOP.COM Market America Worldwide \| SHOP.COM is an award-winning global e-commerce and product brokerage company that specializes in one-to-one…” Source: RevenueBase Database · checked Sep 20, 2026
7	World Market	Partial evidence	Alameda, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	3,298 contacts →
	Partial evidence “We delight customers with an ever-changing marketplace of unique and beautiful home furnishings, décor, accessories and exceptional gourmet products.” Source: RevenueBase Database · checked Sep 20, 2026
8	Poshmark	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 20, 2026	501-1,000	2,591 contacts →
	Partial evidence “Poshmark is the leading fashion marketplace where style comes alive through discovery, self-expression, and human connection.” Source: RevenueBase Database · checked Sep 20, 2026
9	The Realreal	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,462 contacts →
	Strong evidence “The RealReal is the world’s largest online marketplace for authenticated, resale luxury goods.” Source: RevenueBase Database · checked Sep 20, 2026
10	TEMU	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	501-1,000	2,427 contacts →
	Indirect evidence “Temu is an e-commerce company that connects consumers with millions of merchandise partners, manufacturers and brands with the mission to empower them to live a better life.” Source: RevenueBase Database · checked Sep 20, 2026
11	IAA	Partial evidence	Westchester, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,173 contacts →
	Partial evidence “IAA Holdings, LLC (IAA), an RB Global company (NYSE: RBA)(TSX: RBA), is a trusted global marketplace for insights, services, and transaction solutions for commercial assets and…” Source: RevenueBase Database · checked Sep 20, 2026
12	Ritchie Bros	Partial evidence	Westchester, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,139 contacts →
	Partial evidence “Founded in 1958, Ritchie Bros.(NYSE & TSX: RBA) is the world’s largest and most trusted marketplace for used equipment, trucks, and industrial assets.” Source: RevenueBase Database · checked Sep 20, 2026
13	EBIX	Partial evidence	Johns Creek, GA, United StatesHQ checked Sep 20, 2026	5,001-10,000	1,491 contacts →
	Partial evidence “Ebix operates AI-driven, API-first digital marketplaces that power commerce across multiple industries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
14	Whatnot	Indirect evidence	Los Angeles, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,378 contacts →
	Indirect evidence “Whatnot is the largest livestream shopping platform in the US, UK, and Europe.” Source: RevenueBase Database · checked Sep 20, 2026
15	Stubhub	Indirect evidence	New York, GA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,364 contacts →
	Indirect evidence “At StubHub, our mission is to give everyone the freedom to access and connect through live experiences.” Source: RevenueBase Database · checked Sep 20, 2026
16	Stockx	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,261 contacts →
	Indirect evidence “In a world where consumers increasingly value self-expression and individuality, the market for hard-to-find fashion, collectibles, and electronics has never been hotter.” Source: RevenueBase Database · checked Sep 20, 2026
17	Quinstreet	Strong evidence	Foster City, CA, United StatesHQ checked Sep 20, 2026	501-1,000	1,035 contacts →
	Strong evidence “Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: RevenueBase Database · checked Sep 20, 2026
18	Curacao	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	932 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
19	Spreetail	Indirect evidence	Lincoln, NE, United StatesHQ checked Sep 20, 2026	1,001-5,000	836 contacts →
	Indirect evidence “Our mission is to propel brands to increase their ecommerce market share across the globe while improving their operational costs.” Source: RevenueBase Database · checked Sep 20, 2026
20	Zazzle	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 20, 2026	201-500	828 contacts →
	Partial evidence “Zazzle is a marketplace of custom products created by designers selling their art and makers showcasing their customizable products.” Source: RevenueBase Database · checked Sep 20, 2026
21	Liquidity Services	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	501-1,000	781 contacts →
	Partial evidence “Liquidity Services (NASDAQ: LQDT) operates the world’s largest B2B e-commerce marketplace platform for surplus assets with over $10 billion in completed transactions to more than…” Source: RevenueBase Database · checked Sep 20, 2026
22	Ebay For Business	Strong evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	10001+	744 contacts →
	Strong evidence “eBay is one of the world’s largest online marketplaces, connecting people with the things they need and love virtually anytime, anywhere.” Source: RevenueBase Database · checked Sep 20, 2026
23	Shein Distribution Corporation	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	713 contacts →
	Indirect evidence “SHEIN is a global fashion and lifestyle e-retailer committed to making the beauty of fashion accessible to all.” Source: RevenueBase Database · checked Sep 20, 2026
24	ARTSY	Strong evidence	New York, United StatesHQ checked Sep 20, 2026	201-500	618 contacts →
	Strong evidence “The world’s largest online art marketplace.” Source: RevenueBase Database · checked Sep 20, 2026
25	RUE Gilt Groupe	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	501-1,000	607 contacts →
	Indirect evidence “Rue Gilt Groupe is a leading off-price e-commerce portfolio company, connecting the next-generation shopper to world-class brands.” Source: RevenueBase Database · checked Sep 20, 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: online marketplaces. 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 online marketplaces.
Partial evidence: Its own public description names part of online marketplaces, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online marketplaces. 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 2,696 online marketplaces based in the United States

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Online marketplaces based in the United States at a glance

As of Sep 20, 2026

7.7%Verified-email coverage

344.6Average contacts per company

1-10Median size (employees)

8.3%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,505

11-50

813

51-200

223

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 2,696 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 online marketplaces, 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 “online marketplaces”. 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 online marketplaces), 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 online marketplaces, 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, 71,755 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 20, 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.

Online marketplaces by metro

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 online marketplaces, 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 online marketplaces are there based in the United States?

RevenueBase identified 2,696 online marketplaces 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?

Amazon, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most online marketplaces?

New York leads with 225 headquartered companies, followed by Los Angeles (97) and Miami (87).

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 71,755 verified decision-maker contacts tracked across these 2,696 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 20, 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.