Company lists · Data refreshed September 2026

Top 25 Search advertising companies based in the United States

Name: Search advertising companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 7,357 companies tracked

RevenueBase identified 7,357 company matches for search advertising companies associated with the United States as of September 2026 and tracks 40,879 professional contacts across them, including 9,799 with verified work emails. New York is the largest hub.

This list covers company matches for search advertising companies 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 September 21, 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 Sep 21, 2026 How this list was built

7,357Companies

40,879Contacts tracked

9,799Verified emails

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The 25 largest search advertising companies based in the United States

Ranked by team size

Top 25 of 7,357 company matches for search advertising companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 Sep 21, 2026	n/a	825 contacts →
	Exact match “Since its inception in 1997, SEO Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	KPL Tech Solution Pvt. LTD	Exact match	Middletown, DE, United StatesHQ recorded Sep 21, 2026	201-500	390 contacts →
	Exact match “Do you want to see your business on heights?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Localedge	Exact match	Buffalo, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	383 contacts →
	Exact match “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Boostability	Exact match	Lehi, UT, United StatesHQ recorded Sep 21, 2026	201-500	326 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 · Sep 21, 2026 · View company records in RevenueBase
5	Eztouse At Ogden Directories, INC	Exact match	Altoona, PA, United StatesHQ recorded Sep 21, 2026	51-200	302 contacts →
	Exact match “EZToUse is where your business gets easier.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Outerbox	Exact match	Akron, OH, United StatesHQ recorded Sep 21, 2026	201-500	254 contacts →
	Exact match “At OuterBox, we believe growth is oxygen.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Coozmoo Digital. Solutions	Exact match	Pearland, TX, United StatesHQ recorded Sep 21, 2026	201-500	234 contacts →
	Exact match “Coozmoo is a Houston-based, AI-powered digital marketing agency with 250+ specialists, 7 years of proven performance, and one goal: your revenue growth.$280M+ in client revenue…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Admarketplace	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	232 contacts →
	Exact match “adMarketplace is the largest global marketplace for Native Search advertising.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Thrive Internet Marketing Agency	Exact match	Dallas, TX, United StatesHQ recorded Sep 21, 2026	51-200	232 contacts →
	Exact match “Website: Thrive is a full-service digital marketing agency headquartered in Arlington, Texas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Elocal	Exact match	Conshohocken, PA, United StatesHQ recorded Sep 21, 2026	51-200	204 contacts →
	Exact match “eLocal, part of HomeServe Plc, global leader in the home services industry, is a fast-growing and highly profitable national leader in pay-for-performance digital advertising.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Internet Marketing Inc. NOW REQ	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	51-200	203 contacts →
	Exact match “IMI (now REQ) is a full-service digital marketing agency focused on omnichannel strategies and results.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	BIZIQ	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 21, 2026	51-200	184 contacts →
	Exact match “BizIQ: Redefining Digital Marketing Excellence.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Click Here Digital	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 21, 2026	51-200	167 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 · Sep 21, 2026 · View company records in RevenueBase
14	OMG National	Exact match	Davie, FL, United StatesHQ recorded Sep 21, 2026	51-200	161 contacts →
	Exact match “OMG National is a leading Internet Marketing Solutions Company for small and medium-sized businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Gr0	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 21, 2026	51-200	157 contacts →
	Exact match “At GR0, we are in the business of helping businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Cloudmellow	Exact match	Frisco, TX, United StatesHQ recorded Sep 21, 2026	51-200	151 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	GO Local Interactive	Exact match	Overland Park, KS, United StatesHQ recorded Sep 21, 2026	51-200	150 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 · Sep 21, 2026 · View company records in RevenueBase
18	GPO	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	11-50	149 contacts →
	Exact match “GPO is everything search.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	National Positions	Exact match	Westlake Village, CA, United StatesHQ recorded Sep 21, 2026	51-200	137 contacts →
	Exact match “National Positions, The Digital Growth Agency, is a 360-degree digital marketing firm located in Southern California.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Dealeron	Exact match	Rockville, MD, United StatesHQ recorded Sep 21, 2026	201-500	129 contacts →
	Exact match “DealerOn has been the perfect partner for over dealers across North America.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Mainstreethost	Exact match	Amherst, NY, United StatesHQ recorded Sep 21, 2026	51-200	128 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 · Sep 21, 2026 · View company records in RevenueBase
22	SEOP	Exact match	Irvine, CA, United StatesHQ recorded Sep 21, 2026	51-200	121 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 · Sep 21, 2026 · View company records in RevenueBase
23	Hennessey Digital	Exact match	North Hollywood, CA, United StatesHQ recorded Sep 21, 2026	51-200	115 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 · Sep 21, 2026 · View company records in RevenueBase
24	1seo Digital Agency	Exact match	Bristol, PA, United StatesHQ recorded Sep 21, 2026	51-200	109 contacts →
	Exact match “1SEO Digital Agency is your one-stop shop for success online.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Lyfe Marketing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	51-200	107 contacts →
	Exact match “We're a social media marketing company in Atlanta who help small businesses increase revenue through strategic online strategies.” Recorded in the RevenueBase company graph · Sep 21, 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 advertising companies”. 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 25 of 7,357 search advertising companies based in the United States

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Search advertising companies based in the United States at a glance

As of Sep 21, 2026

24.0%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

5,324

11-50

1,663

51-200

278

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 7,357 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 advertising companies” 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 9,799 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 September 21, 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 advertising companies 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 advertising companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many search advertising companies are there based in the United States?

RevenueBase identified 7,357 company matches for search advertising companies associated with the United States as of September 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 advertising companies?

New York leads with 278 company records, followed by Los Angeles (154) and Houston (143).

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 9,799 professional contacts with verified work emails tracked across these 7,357 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 September 21, 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.