Company lists · Data verified August 2026

Top 23 Enterprise SEO agencies based in the United States

Name: Enterprise SEO agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 9,866 companies tracked

There are 9,866 enterprise SEO agencies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 94,588 professional contacts across them, including 14,514 with verified work emails and 17,242 with mobile numbers. New York is the largest hub.

This list covers enterprise SEO agencies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

9,866Companies

94,588Contacts tracked

14,514Verified emails

17,242Mobile numbers

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The 23 largest enterprise SEO agencies based in the United States

Ranked by team size

Top 23 of 9,866 enterprise SEO agencies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	WEBFX	Harrisburg, PA	501-1,000	874	427
2	Imark Infotech Pvt. LTD	Fransisco	201-500	626	222
3	Wildnet Technologies	New York, NY	201-500	609	135
4	Ebrandz LLP	New York, NY	201-500	427	115
5	KPL Tech Solution Pvt. LTD	Middletown, DE	201-500	390	13
6	Boostability	Lehi, UT	201-500	330	73
7	Coalition Technologies	Los Angeles, CA	201-500	320	116
8	Adsrole	Houston, TX	501-1,000	257	1
9	V Digital Services	Miami, FL	201-500	154	89
10	Dealeron	Rockville, MD	201-500	133	69
11	Zoek Marketing	Irvine, CA	201-500	106	37
12	Everservice Holdings, LLC	Los Angeles, CA	201-500	60	24
13	Next NET	St Petersburg, FL	201-500	55	23
14	ad.iq	Costa Mesa, CA	501-1,000	35	1
15	Resultrix	Bellevue, WA	201-500	33	2
16	Web.com Search Agency	Scottsdale, AZ	501-1,000	25	1
17	Activate Digital Media	The Woodlands, TX	201-500	22	10
18	RED Canyon Media	Lehi, UT	201-500	20	10
19	13stripes	Plano, TX	201-500	20	2
20	Saba INC	San Diego, CA	201-500	9	6
21	VEHOM	n/a	201-500	9	1
22	Collaboratepros	Tempe, AZ	501-1,000	4	2
23	Webstar Studios	Duluth, GA	201-500	1	1

Showing 23 of 9,866 enterprise SEO agencies based in the United States

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Enterprise SEO agencies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 377 HQs

17,242Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

7,043

11-50

2,327

51-200

383

201-500

501-1,000

5,001-10,000

10001+

Enterprise SEO agencies by metro

Metro	Companies
Enterprise SEO agencies in New York	377
Enterprise SEO agencies in Los Angeles	246
Enterprise SEO agencies in Houston	195
Enterprise SEO agencies in Miami	180
Enterprise SEO agencies in Austin	173
Enterprise SEO agencies in San Diego	154
Enterprise SEO agencies in Dallas	138

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise SEO agencies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many enterprise SEO agencies are there based in the United States?

There are 9,866 enterprise SEO agencies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

WEBFX, headquartered in Harrisburg, tops this list with the largest team on record.

Which city has the most enterprise SEO agencies?

New York leads with 377 headquartered companies, followed by Los Angeles (246) and Houston (195).

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 14,514 verified decision-maker contacts tracked across these 9,866 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.