Company lists · Data refreshed September 2026
Top 25 Sem agencies based in Tampa, United States
RevenueBase identified 77 sem agencies headquartered in Tampa, United States as of September 2026 and tracks 289 professional contacts across them, including 111 with verified work emails. New York is the largest hub.
This list covers sem agencies headquartered in Tampa, 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 sem agencies based in Tampa, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 71 contacts → | ||||
Indirect evidence “Socius Marketing, one of the largest Internet marketing agencies in the country, specializes in online lead generation, search engine optimization, custom web design and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 15 contacts → | ||||
Strong evidence “We are full service advertising agency offering advertising and marketing services- Traditional: TV, Radio, Outdoor & Print - Video Production - Digital: Websites, SEO/SEM, Online…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 15 contacts → | ||||
Indirect evidence “Inflow® is a digital marketing company offering cross-channel, customized services to businesses across the U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12 contacts → | ||||
Indirect evidence “OnTop is a leading and a unique Online Marketing agency, providing high end campaigns building and optimization and specializing in generating high profit in various sectors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 12 contacts → | ||||
Indirect evidence “Focus on your business, don't spend time learning technical optimization.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9 contacts → | ||||
Indirect evidence “Turning the Marketing experience for Small-to-Medium Sized Businesses into a science with Marketing Attribution.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 9 contacts → | ||||
Indirect evidence “SEO Advantage is a search marketing company that helps businesses build their websites into authority sources that rank higher, grow traffic, and get more customers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6 contacts → | ||||
Indirect evidence “Power On Marketing is a full-service marketing firm that offers creative and innovative solutions for proven results.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 5 contacts → | ||||
Indirect evidence “At The Room Marketing we are passionate about helping our clients improve their business.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4 contacts → | ||||
Indirect evidence “Introducing Swift Fox Media, a leading digital advertising agency that specializes in creating effective and measurable campaigns for businesses of all sizes.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3 contacts → | ||||
Indirect evidence “Fusion offers complete online marketing services to businesses across North America.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 3 contacts → | ||||
Indirect evidence “Adclyk is a full service (Search, Social, and SEO) digital partner built by former education marketing leaders that understand the importance of the full life-cycle of the student.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 contacts → | ||||
Indirect evidence “Our team helps your business grow its online presence.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2 contacts → | ||||
Indirect evidence “We are a full service internet marketing agency.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1 contacts → | ||||
Indirect evidence “We help small businesses grow by managing their digital footprint.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1 contacts → | ||||
Indirect evidence “Precision Digital is a specialist digital advertising agency, providing in-house client team support through to full agency managed service, across AEO + SEO, paid search…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1 contacts → | ||||
Indirect evidence “At Qode Agency, we are an internet and digital marketing company, search engine optimization (SEO), and web design specialists.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Indirect evidence “Based in beautiful Tampa, Gulf Coast Brands designs, develops and drives traffic to a wide variety of client websites.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Indirect evidence “Webhead Interactive is not just your average SEO and digital marketing agency - we're the superheroes of the digital world, located in the heart of Tampa, Florida!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Indirect evidence “The Helmut Hampton Tampa SEO company can get your business on page one in front of your customers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Indirect evidence “Image Building Media is an internet marketing company based in Tampa, Florida.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “Google Partner with offices in Tampa, Orlando and Denver, Azure Digital is an online marketing partner dedicated to helping small to large businesses achieve online sales growth.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “EyeQuest Digital develops and implements customized strategies for business to find profitable leads in the digital world through search engine optimization and paid search ads.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Pete's Post is an internet marketing firm that can provide you with the complete set of services you need to dominate your local market through online methods.” 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: sem 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 sem agencies.
- Partial evidence
- Its own public description names part of sem agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name sem 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 77 sem agencies based in Tampa, United States
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Sem agencies based in Tampa, 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 Tampa, so it is reported there. Company counts and contact totals on this page are exact for Tampa, over 77 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 sem 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 Tampa, United States whose own description of what they do matches “sem 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 sem 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 sem agencies, and records with no verified work email. Companies headquartered outside Tampa 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, 111 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.
Sem agencies by metro in the United States
- Sem agencies in New York234
- Sem agencies in Los Angeles149
- Sem agencies in Houston121
- Sem agencies in Miami110
- Sem agencies in Austin108
- Sem agencies in Denver101
- Sem agencies in Chicago95
- Sem agencies in San Diego95
- Sem agencies in Las Vegas83
- Sem agencies in Dallas81
- Sem agencies in Tampa77
- Sem agencies in San Francisco73
- Sem agencies in Atlanta69
- Sem agencies in Phoenix67
- Sem agencies in Orlando58
- Sem agencies in Portland53
- Sem agencies in Seattle48
- Sem agencies in Sheridan48
- Sem agencies in Charlotte47
- Sem agencies in Fort Lauderdale43
- Sem agencies in Irvine42
- Sem agencies in Scottsdale40
- Sem agencies in Salt Lake City36
- Sem agencies in Boston35
- Sem agencies in Philadelphia35
- Sem agencies in Boca Raton34
- Sem agencies in Minneapolis32
- Sem agencies in San Antonio31
- Sem agencies in Raleigh30
- Sem agencies in Cleveland29
- Sem agencies in Sacramento29
- Sem agencies in Colorado Springs28
- Sem agencies in San Jose26
- Sem agencies in Jacksonville25
- Sem agencies in Kansas City25
- Sem agencies in Richmond25
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 sem 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 sem agencies are there based in Tampa, United States?
RevenueBase identified 77 sem agencies headquartered in Tampa, 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?
Socius Marketing, headquartered in Tampa, tops this list with the largest team on record.
Which city has the most sem agencies?
New York leads with 234 headquartered companies, followed by Los Angeles (149) and Houston (121).
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 111 verified decision-maker contacts tracked across these 77 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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Sem agencies by geography
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- Sem agencies based in Montreal, Canada
- Sem agencies based in Ottawa, Canada
- Sem agencies based in Toronto, Canada
- Sem agencies based in Vancouver, Canada
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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.