Company lists · Data refreshed November 2026

Top 24 Search engine optimization firms based in the United States

Name: Search engine optimization firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,572 companies tracked

RevenueBase identified 6,572 company matches for search engine optimization firms associated with the United States as of November 2026 and tracks 68,738 professional contacts across them, including 7,374 with verified work emails. New York is the largest hub.

This list covers company matches for search engine optimization firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

6,572Companies

68,738Contacts tracked

7,374Verified emails

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The 24 largest search engine optimization firms based in the United States

Ranked by team size

Top 24 of 6,572 company matches for search engine optimization firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SEO INC	Exact match	Carlsbad, CA, United StatesHQ recorded Nov 6, 2026	n/a	838 contacts →
	Exact match “Since its inception in 1997, SEO Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	KPL Tech Solution Pvt. LTD	Exact match	Middletown, DE, United StatesHQ recorded Nov 6, 2026	201-500	368 contacts →
	Exact match “Do you want to see your business on heights?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Coalition Technologies	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 6, 2026	201-500	332 contacts →
	Exact match “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Boostability	Exact match	Lehi, UT, United StatesHQ recorded Nov 6, 2026	201-500	327 contacts →
	Exact match “At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	auroin.com	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	191 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Click Here Digital	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 6, 2026	51-200	173 contacts →
	Exact match “Founded by Bo White in 1993 during the early stages of the Internet, Click Here Digital is a digital marketing and consulting firm that provides full-service digital marketing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	GPO	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	n/a	153 contacts →
	Exact match “GPO is everything search.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	SEOP	Exact match	Irvine, CA, United StatesHQ recorded Nov 6, 2026	51-200	145 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	MOPRO	Exact match	Newport Beach, CA, United StatesHQ recorded Nov 6, 2026	51-200	143 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Mainstreethost	Exact match	Amherst, OH, United StatesHQ recorded Nov 6, 2026	51-200	135 contacts →
	Exact match “Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Blushark Digital	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	51-200	131 contacts →
	Exact match “BluShark Digital LLC was founded on the principle of providing high quality online marketing solutions for companies struggling to stand out online.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	GO Local Interactive	Exact match	Overland Park, KS, United StatesHQ recorded Nov 6, 2026	51-200	123 contacts →
	Exact match “Go Local Interactive is a premium digital marketing agency specializing in SEO, PPC, Content, and Web products.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Search Engine Journal	Exact match	Boca Raton, FL, United StatesHQ recorded Nov 6, 2026	11-50	123 contacts →
	Exact match “We are SEO professionals, content writers, and marketers, just like you.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Hennessey Digital	Exact match	North Hollywood, CA, United StatesHQ recorded Nov 6, 2026	51-200	122 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Local Splash	Exact match	Fountain Valley, CA, United StatesHQ recorded Nov 6, 2026	51-200	122 contacts →
	Exact match “Local Splash is the leading local SEO service that specializes in getting our clients high rankings in local search engine results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Siege Media	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	51-200	115 contacts →
	Exact match “Full-service GEO for brands that want to win in search and AI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Mediatrenz	Exact match	Middletown, DE, United StatesHQ recorded Nov 6, 2026	51-200	113 contacts →
	Exact match “MediaTrenz is a leading ROI-driven SEO company in India that help you rank high on search engine results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	PMP Marketing Group	Exact match	West Palm Beach, FL, United StatesHQ recorded Nov 6, 2026	11-50	109 contacts →
	Exact match “For over 20 years, PMP has been the trusted partner for consumer law firms, delivering innovative marketing and website management solutions that drive results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Seomoz	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	107 contacts →
	Exact match “SEOmoz is the world’s most popular provider of SEO software.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Seoprofy	Exact match	Orlando, FL, United StatesHQ recorded Nov 6, 2026	51-200	102 contacts →
	Exact match “SeoProfy is your strategic SEO and AI visibility partner for organic and AI visibility that brings real ROI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Zoek Marketing	Exact match	Irvine, CA, United StatesHQ recorded Nov 6, 2026	201-500	99 contacts →
	Exact match “As a business owner there are not many things that make you want to pull your hair out as much as figuring out how to gain new customers, phone calls, and visitors to your website.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Paper Street Media	Exact match	Miami, FL, United StatesHQ recorded Nov 6, 2026	11-50	96 contacts →
	Exact match “With more than a decade of experience Paper Street Media can help you leverage manpower and increase your capacity for marketing and web design projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Direct Online Marketing	Exact match	Pittsburgh, PA, United StatesHQ recorded Nov 6, 2026	11-50	96 contacts →
	Exact match “Direct Online Marketing (DOM) is a digital marketing agency and Top 1% Premier Google Partner that has been helping businesses grow confidently online since 2006.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Previsible	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	11-50	85 contacts →
	Exact match “Previsible empowers businesses with actionable SEO consulting, content marketing and development designed to drive impactful results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “search engine optimization firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 24 of 6,572 search engine optimization firms based in the United States

See the full list, filter by size, metro and specialty, and access 7,374 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Search engine optimization firms based in the United States at a glance

As of Nov 6, 2026

10.7%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

3.7%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,863

11-50

1,426

51-200

212

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 6,572 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “search engine optimization firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,374 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Search engine optimization firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “search engine optimization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many search engine optimization firms are there based in the United States?

RevenueBase identified 6,572 company matches for search engine optimization firms associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SEO INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most search engine optimization firms?

New York leads with 246 company records, followed by Los Angeles (154) and Houston (114).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,374 professional contacts with verified work emails tracked across these 6,572 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.