Company lists · Data refreshed September 2026

Top 8 Digital growth marketing agencies based in Walnut Creek, United States

Name: Digital growth marketing agencies based in Walnut Creek, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 26 companies tracked

RevenueBase identified 26 digital growth marketing agencies headquartered in Walnut Creek, United States as of September 2026 and tracks 136 professional contacts across them, including 58 with verified work emails. Across the United States, New York is the largest hub for this category (1,931 companies); Walnut Creek has 26.

This list covers digital growth marketing agencies headquartered in Walnut Creek, 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 24, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review

26Companies

136Contacts tracked

58Verified emails

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The 8 largest digital growth marketing agencies based in Walnut Creek, United States

Ranked by team size

Top 8 of 26 digital growth marketing agencies based in Walnut Creek, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to digital growth marketing agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Mediajel	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	51-200	42 contacts →
	Strong evidence “Digital Marketing platform for regulated brands – it’s our thing.” Source: RevenueBase Database · checked Sep 24, 2026
2	Incline Gaming Marketing	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Indirect evidence “iGaming is not just another market for us – it’s all we do.” Source: RevenueBase Database · checked Sep 24, 2026
3	Four15 Digital	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Partial evidence “Four15 is a small team of all-star marketers who outwork our competition to drive results and uncover continuous growth opportunities for our clients.” Source: RevenueBase Database · checked Sep 24, 2026
4	We Inc. Marketing	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1-10	9 contacts →
	Indirect evidence “We guide and empower our clients to reach their goals.” Source: RevenueBase Database · checked Sep 24, 2026
5	Golden Mailer	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	11-50	2 contacts →
	Indirect evidence “Golden Mailer is a consumer services company based out of 1661 Botelho Dr # 240, Walnut Creek, California, United States.” Source: RevenueBase Database · checked Sep 24, 2026
6	Slam Media LAB	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1-10	2 contacts →
	Strong evidence “Slam Media Lab is an integrated digital agency based in San Francisco with a hyper-focus on web development & design, organic search, and content marketing.” Source: RevenueBase Database · checked Sep 24, 2026
7	KLC Marketing Group	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1-10	2 contacts →
	Strong evidence “KLC Marketing Group creates digital marketing that generates leads and automated marketing which converts leads to customers.” Source: RevenueBase Database · checked Sep 24, 2026
8	Markess LLC	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	11-50	1 contacts →
	Partial evidence “Markess stands for "Marketing Success." Whether you need marketing planning or execution, we are here to help.” Source: RevenueBase Database · checked Sep 24, 2026

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: digital growth marketing 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 digital growth marketing agencies.
Partial evidence: Its own public description names part of digital growth marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name digital growth marketing 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 8 of 26 digital growth marketing agencies based in Walnut Creek, United States

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Digital growth marketing agencies based in Walnut Creek, United States at a glance

As of Sep 24, 2026

42.6%Verified-email coverage

5.2Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Walnut Creek, so it is reported there. Company counts and contact totals on this page are exact for Walnut Creek, over 26 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 digital growth marketing 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 Walnut Creek, United States whose own description of what they do matches “digital growth marketing 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 digital growth marketing 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 digital growth marketing agencies, and records with no verified work email. Companies headquartered outside Walnut Creek 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, 58 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 24, 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.

Digital growth marketing agencies by metro in the United States

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 digital growth marketing 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 digital growth marketing agencies are there based in Walnut Creek, United States?

RevenueBase identified 26 digital growth marketing agencies headquartered in Walnut Creek, 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?

Mediajel, headquartered in Walnut Creek, tops this list with the largest team on record.

Which city in the United States has the most digital growth marketing agencies?

New York leads the United States with 1,931 headquartered companies, followed by Los Angeles (1,336) and Miami (1,041). Walnut Creek has 26.

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 58 verified decision-maker contacts tracked across these 26 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 24, 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.