Company lists · Data refreshed September 2026

Top 25 SaaS enterprise SEO agencies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,511 companies tracked

RevenueBase identified 4,511 SaaS enterprise SEO agencies headquartered in the United States as of September 2026 and tracks 65,859 professional contacts across them, including 6,062 with verified work emails. New York is the largest hub.

This list covers SaaS 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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 29, 2026 86% judged on-target in blind review

4,511Companies

65,859Contacts tracked

6,062Verified emails

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

The 25 largest SaaS enterprise SEO agencies based in the United States

Ranked by team size

Top 25 of 4,511 SaaS enterprise SEO agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to SaaS enterprise SEO agencies: 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	SEO INC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 29, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 29, 2026
2	Wildnet Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	590 contacts →
	Partial evidence “Wildnet Technologies - Best Digital Marketing Agency \| White Label Services for Growing Agencies \| Results-Driven AI SEO Services We don't just run campaigns-we build growth…” Source: RevenueBase Database · checked Sep 29, 2026
3	KPL Tech Solution Pvt. LTD	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 29, 2026	201-500	390 contacts →
	Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 29, 2026
4	Boostability	Partial evidence	Lehi, UT, United StatesHQ checked Sep 29, 2026	201-500	326 contacts →
	Partial evidence “At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.” Source: RevenueBase Database · checked Sep 29, 2026
5	Coalition Technologies	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	320 contacts →
	Partial evidence “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Source: RevenueBase Database · checked Sep 29, 2026
6	Stan Ventures	Indirect evidence	Lake Bluff, IL, United StatesHQ checked Sep 29, 2026	201-500	319 contacts →
	Indirect evidence “We run the link-building operation behind a lot of agencies you've probably heard of.” Source: RevenueBase Database · checked Sep 29, 2026
7	TSL Marketing	Strong evidence	Elkridge, MD, United StatesHQ checked Sep 29, 2026	201-500	253 contacts →
	Strong evidence “TSL Marketing provides lead generation, SEO, Website, Content, Channel Marketing and HubSpot agency services to MSPs, IT companies, IT Services firms, and SaaS firms.” Source: RevenueBase Database · checked Sep 29, 2026
8	Internet Marketing Inc. NOW REQ	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	51-200	203 contacts →
	Indirect evidence “IMI (now REQ) is a full-service digital marketing agency focused on omnichannel strategies and results.” Source: RevenueBase Database · checked Sep 29, 2026
9	auroin.com	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	183 contacts →
	Partial evidence “Incorporated in 2010, AuroIN LLC is a premier digital marketing agency based in World Trade Center, New York, specializing in AI-driven SEO strategies that deliver measurable ROI.” Source: RevenueBase Database · checked Sep 29, 2026
10	Website Depot Inc. Digital Marketing & SEO	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	n/a	156 contacts →
	Indirect evidence “Websites Depot Inc.” Source: RevenueBase Database · checked Sep 29, 2026
11	V Digital Services	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 29, 2026	201-500	152 contacts →
	Indirect evidence “As one of the fastest-rising digital marketing agencies in the U.S, V Digital Services operates in more than 300 American cities, where we offer premier white-label solutions for…” Source: RevenueBase Database · checked Sep 29, 2026
12	Cloudmellow	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 29, 2026	51-200	151 contacts →
	Indirect evidence “CloudMellow is a tech-driven, full-scale digital marketing agency with a proven track record in transforming businesses across the globe through thoughtful and innovative…” Source: RevenueBase Database · checked Sep 29, 2026
13	GO Local Interactive	Partial evidence	Overland Park, KS, United StatesHQ checked Sep 29, 2026	51-200	150 contacts →
	Partial evidence “Go Local Interactive is a premium digital marketing agency specializing in SEO, PPC, Content, and Web products.” Source: RevenueBase Database · checked Sep 29, 2026
14	GPO	Indirect evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	11-50	149 contacts →
	Indirect evidence “GPO is everything search.” Source: RevenueBase Database · checked Sep 29, 2026
15	TACO	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	147 contacts →
	Indirect evidence “Taco builds agentic workflows with search expertise to drive outsized growth outcomes for our customers.” Source: RevenueBase Database · checked Sep 29, 2026
16	MOPRO	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	134 contacts →
	Indirect evidence “Mopro gives small businesses a website designed to convert, and the A.I-powered tools they need to claim a top spot in search results and win more customers.” Source: RevenueBase Database · checked Sep 29, 2026
17	Mainstreethost	Indirect evidence	Amherst, NY, United StatesHQ checked Sep 29, 2026	51-200	128 contacts →
	Indirect evidence “Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…” Source: RevenueBase Database · checked Sep 29, 2026
18	Rapiddev	Indirect evidence	Boston, United StatesHQ checked Sep 29, 2026	51-200	124 contacts →
	Indirect evidence “We help companies turn AI strategy into measurable business outcomes.” Source: RevenueBase Database · checked Sep 29, 2026
19	SEOP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 29, 2026	51-200	121 contacts →
	Partial evidence “SEOP is one of the leaders in the Search Engine Optimization industry and was co-founded by SEO experts that thrive on a combination of in-depth expertise and creative, forward…” Source: RevenueBase Database · checked Sep 29, 2026
20	LSM	Indirect evidence	Brentwood, TN, United StatesHQ checked Sep 29, 2026	11-50	118 contacts →
	Indirect evidence “As a Google Premier and Facebook Agency Partner, LSM drives revenue growth for multi-unit businesses through scalable websites, lead generating advertising campaigns…” Source: RevenueBase Database · checked Sep 29, 2026
21	Tripledart	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	51-200	117 contacts →
	Indirect evidence “Your GTM engine, fully loaded.” Source: RevenueBase Database · checked Sep 29, 2026
22	Hennessey Digital	Partial evidence	North Hollywood, CA, United StatesHQ checked Sep 29, 2026	51-200	115 contacts →
	Partial evidence “Named to Fortune’s 50 Best Workplaces in Advertising & Marketing, Hennessey Digital is an award-winning digital marketing agency specializing in SEO for lawyers and other online…” Source: RevenueBase Database · checked Sep 29, 2026
23	Rankfast Search Marketing Company	Strong evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	109 contacts →
	Strong evidence “RankFast is a data-driven digital marketing agency dedicated to accelerating growth for Ecommerce, SaaS, Local Businesses, and Enterprises.” Source: RevenueBase Database · checked Sep 29, 2026
24	Seomoz	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	51-200	105 contacts →
	Partial evidence “SEOmoz is the world’s most popular provider of SEO software.” Source: RevenueBase Database · checked Sep 29, 2026
25	Einstein Industries	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	51-200	95 contacts →
	Indirect evidence “Einstein Industries, Inc.” Source: RevenueBase Database · checked Sep 29, 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: SaaS enterprise SEO agencies. 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 SaaS enterprise SEO agencies.
Partial evidence: Its own public description names part of SaaS enterprise SEO agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SaaS enterprise SEO agencies. 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 4,511 SaaS enterprise SEO agencies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 6,062 reachable decision-makers.

Free signup · no credit card

View the full list →

SaaS enterprise SEO agencies based in the United States at a glance

As of Sep 29, 2026

9.2%Verified-email coverage

14.6Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,188

11-50

1,092

51-200

181

201-500

501-1,000

1,001-5,000

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 4,511 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 SaaS enterprise SEO agencies, 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 “SaaS enterprise SEO agencies”. 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 SaaS enterprise SEO agencies), 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 SaaS enterprise SEO agencies, 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, 6,062 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 29, 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.

SaaS enterprise SEO agencies 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 SaaS enterprise SEO agencies, 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 SaaS enterprise SEO agencies are there based in the United States?

RevenueBase identified 4,511 SaaS enterprise SEO agencies 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?

SEO INC, headquartered in Carlsbad, tops this list with the largest team on record.

Which city has the most SaaS enterprise SEO agencies?

New York leads with 201 headquartered companies, followed by Los Angeles (125) and Houston (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 6,062 verified decision-maker contacts tracked across these 4,511 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,511 SaaS enterprise SEO agencies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

SaaS enterprise SEO agencies by geography

Browse the directory

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.