Company lists · Data refreshed September 2026
Top 25 SEO service providers based in Houston, United States
RevenueBase identified 115 SEO service providers headquartered in Houston, United States as of September 2026 and tracks 467 professional contacts across them, including 136 with verified work emails. New York is the largest hub.
This list covers SEO service providers headquartered in Houston, 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 22, 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.
The 25 largest SEO service providers based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 54 contacts → | ||||
Indirect evidence “Your Trusted Digital Marketing Partner We love connecting data to decisions, transforming results, and accelerating your success.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 34 contacts → | ||||
Strong evidence “EWR Digital is a Houston-based SEO agency and digital marketing firm specializing in search engine optimization (SEO), AI SEO, PPC, and website design.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 26 contacts → | ||||
Strong evidence “Regex SEO is a Houston-based Internet Marketing company, which was formed by a group of seasoned professionals with extensive experience in the digital marketing arena.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 23 contacts → | ||||
Strong evidence “We are an international digital marketing/SEO and web design consulting firm based in Houston, TX with leadership that has over 15 years of proven success.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 12 contacts → | ||||
Strong evidence “Expertos en SEO, SEM y Desarrollo Web.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 12 contacts → | ||||
Indirect evidence “Landing page agency” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12 contacts → | ||||
Indirect evidence “ItsGuru is a Houston, TX based consulting firm providing solutions to small and medium sized businesses.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 contacts → | ||||
Strong evidence “Bizopia turns clicks into customers by optimizing websites and online platforms through proven SEO strategies, search engine optimization, social media, video marketing, email…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 11 contacts → | ||||
Indirect evidence “In 2025, unleash the full potential of your business with top-tier Internet marketing services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 10 contacts → | ||||
Strong evidence “We are a recognized leader in SEO and PPC campaigns, as well as a respected developer of custom websites and web applications.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 9 contacts → | ||||
Strong evidence “Authority Solutions® is an integrity-driven digital marketing agency that offers internet marketing services, with a focus on SEO and web design that work together to produce…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Indirect evidence “We are a digital marketing agency located in The Galleria.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Strong evidence “Houston Search Engine Optimization Company Directory One is a full service website marketing company offering SEO/SEM, pay per click management, website design, video production…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “Houston Pay Per Click (PPC), provides internet advertising & search engine marketing services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Indirect evidence “Welcome to Integrity Marketing and Consulting!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Indirect evidence “Anytime Digital Marketing is a Houston based digital marketing and advertising agency comprised of professionals who have a passion for helping businesses realize their marketing…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “Vertical Web is a full-service Internet Marketing Company that provide a wide array of services small business needs.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “SEO411 is a turnkey search marketing consultation and web development firm that specializes in establishing a strong customer base for every client we work with.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “At Alkali, we pride ourselves on being technology and marketing experts that are deeply client-oriented.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Strong evidence “In 2017, there is a never-ending search for an seo expert that is an effective advertising agency in Houston.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Wise Growth Marketing LLC is your trusted digital marketing agency, serving marketing teams of all sizes, and businesses at every stage.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Klever Digital is your full service Digital Marketing Agency in Houston, TX.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Strong evidence “Taverit Marketing, your trusted Houston SEO agency, brings unparalleled expertise to the table.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Sustainable and ethical Search Engine Marketing for clients that gets results.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Strong evidence “Development,SEO and Social Media with a dabble of security.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: SEO service providers. 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 SEO service providers.
- Partial evidence
- Its own public description names part of SEO service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name SEO service providers. 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 115 SEO service providers based in Houston, United States
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SEO service providers based in Houston, United States at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 115 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 SEO service providers, 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 Houston, United States whose own description of what they do matches “SEO service providers”. 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 SEO service providers), 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 SEO service providers, and records with no verified work email. Companies headquartered outside Houston 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, 136 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 22, 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.
SEO service providers by metro in the United States
- SEO service providers in New York230
- SEO service providers in Los Angeles161
- SEO service providers in Houston115
- SEO service providers in Denver101
- SEO service providers in Austin96
- SEO service providers in San Diego90
- SEO service providers in Dallas87
- SEO service providers in Miami87
- SEO service providers in Las Vegas77
- SEO service providers in Chicago72
- SEO service providers in San Francisco70
- SEO service providers in Phoenix68
- SEO service providers in Atlanta65
- SEO service providers in Tampa64
- SEO service providers in Sheridan59
- SEO service providers in Orlando54
- SEO service providers in Seattle48
- SEO service providers in Portland44
- SEO service providers in Fort Lauderdale38
- SEO service providers in Philadelphia37
- SEO service providers in Salt Lake City34
- SEO service providers in Boca Raton33
- SEO service providers in Boston33
- SEO service providers in Colorado Springs33
- SEO service providers in Scottsdale31
- SEO service providers in Charlotte30
- SEO service providers in San Antonio30
- SEO service providers in Raleigh29
- SEO service providers in Irvine28
- SEO service providers in Jacksonville28
- SEO service providers in Richmond26
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 SEO service providers, 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 SEO service providers are there based in Houston, United States?
RevenueBase identified 115 SEO service providers headquartered in Houston, 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?
Forthea, headquartered in Houston, tops this list with the largest team on record.
Which city has the most SEO service providers?
New York leads with 230 headquartered companies, followed by Los Angeles (161) and Houston (115).
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 136 verified decision-maker contacts tracked across these 115 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 22, 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.
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