Company lists · Data refreshed September 2026

Top 10 SEO firms based in Washington, United States

RevenueBase identified 30 company matches for SEO firms associated with Washington, United States as of September 2026 and tracks 249 professional contacts across them, including 111 with verified work emails. Across the United States, New York is the largest hub for this category (352 companies); Washington has 30.

This list covers company matches for SEO firms associated with Washington, 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 19, 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 19, 2026 How this list was built
30Companies
249Contacts tracked
111Verified emails
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The 10 largest SEO firms based in Washington, United States

Ranked by team size
Top 10 of 30 company matches for SEO firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202651-200137 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 · Sep 19, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-104 contacts →

Exact match

“Digital Assembly Line (DAL) is a privately held, full-service marketing and search engine optimization (SEO) company based in Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchWashington, NC, United StatesHQ recorded Sep 19, 20261-103 contacts →

Exact match

“Capstone Digital Marketing is your “one-stop” online marketing service.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202611-503 contacts →

Exact match

“MedShark Digital is a digital marketing agency that provides high-quality SEO solutions to help medical professionals grow their businesses and practices.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-103 contacts →

Exact match

“Is your business performing online?”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchWashington, IL, United StatesHQ recorded Sep 19, 20261-102 contacts →

Exact match

“We help businesses improve, build, market, and manage a better web presence by defining effective goals and pursuing leads to help them grow.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-101 contacts →

Exact match

“Metapilot provides SEO and content strategy consulting and implementation in Miami and South Florida.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-101 contacts →

Exact match

“DA Media provides marketing services to business owners.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-101 contacts →

Exact match

“The Emerson Agency, based in the Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261-101 contacts →

Exact match

“Fozin Consulting is a Digital Marketing Service located in Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 10 of 30 SEO firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 111 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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SEO firms based in Washington, United States at a glance

As of Sep 19, 2026
44.6%Verified-email coverage
8.3Average contacts per company
1-10Median size (employees)
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
6
51-200
1

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 30 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 Washington, United States whose business descriptions match “SEO 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 111 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 19, 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.

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 “SEO firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many SEO firms are there based in Washington, United States?

RevenueBase identified 30 company matches for SEO firms associated with Washington, 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?

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

Which city in the United States has the most SEO firms?

New York leads the United States with 352 company records, followed by Los Angeles (218) and Houston (170). Washington has 30.

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 111 professional contacts with verified work emails tracked across these 30 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 19, 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.