Company lists · Data refreshed September 2026

Top 25 Grassroots marketing agencies based in San Diego, United States

Name: Grassroots marketing agencies based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 99 companies tracked

RevenueBase identified 99 grassroots marketing agencies headquartered in San Diego, United States as of September 2026 and tracks 663 professional contacts across them, including 207 with verified work emails. Across the United States, New York is the largest hub for this category (364 companies); San Diego has 99.

This list covers grassroots marketing agencies headquartered in San Diego, 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 28, 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 28, 2026 86% judged on-target in blind review

99Companies

663Contacts tracked

207Verified emails

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The 25 largest grassroots marketing agencies based in San Diego, United States

Ranked by team size

Top 25 of 99 grassroots marketing agencies based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to grassroots 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	MDG	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	159 contacts →
	Partial evidence “As the nation’s leading agency specializing in event and association marketing, mdg, a Freeman company, delivers results.” Source: RevenueBase Database · checked Sep 28, 2026
2	Raindrop	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	107 contacts →
	Partial evidence “We create Marketing People Love that earns attention, builds brands and drives results.” Source: RevenueBase Database · checked Sep 28, 2026
3	GDX Studios	Partial evidence	San Diego, United StatesHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “GDX Studios is a full-service experiential marketing studio that takes a holistic approach to its services and engages consumers in bold and dynamic ways – creating buzz and…” Source: RevenueBase Database · checked Sep 28, 2026
4	62above	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “62ΛBOVE brings a strategic approach to marketing challenges, incorporating creative, public relations, social media, influencer marketing and paid media.” Source: RevenueBase Database · checked Sep 28, 2026
5	JL Marketing	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “Your partner in generating new business, building brand awareness, and creating engaging digital campaigns.” Source: RevenueBase Database · checked Sep 28, 2026
6	Youthvine Agency	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Youthvine is a next-generation lifestyle marketing agency and talent network, connecting brands with the heartbeat of youth culture through skateboarding, select action sports…” Source: RevenueBase Database · checked Sep 28, 2026
7	Olive Public Relations	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Partial evidence “Olive is a national boutique public relations and marketing agency based in San Diego on a mission to amplify the stories of the most positively powerful brands and people.” Source: RevenueBase Database · checked Sep 28, 2026
8	Coast Digital	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “From experience working with both enterprise brands and startups we know that “growth” is a relative term, dependent on the goals and capabilities of the your brand.” Source: RevenueBase Database · checked Sep 28, 2026
9	The AIM Agency	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Aim is a marketing agency dedicated to creating insanely great brand experiences for our clients.” Source: RevenueBase Database · checked Sep 28, 2026
10	Nowadays	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Welcome to the team that lit the TikTok fire in North America.” Source: RevenueBase Database · checked Sep 28, 2026
11	The Destiny LAB	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “At The Destiny Lab, we don’t just market brands-we amplify missions.” Source: RevenueBase Database · checked Sep 28, 2026
12	WFR Agency	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Working for Results.” Source: RevenueBase Database · checked Sep 28, 2026
13	Gaslamp District Media	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “Gaslamp District Media (GDM) provides clients a marketing platform that is unlike any other.” Source: RevenueBase Database · checked Sep 28, 2026
14	MIG SAN Diego	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	201-500	4 contacts →
	Indirect evidence “CREATIVE, CONNECTED, ALWAYS CURIOUS We are a community of designers, planners, engineers, scientists and storytellers.” Source: RevenueBase Database · checked Sep 28, 2026
15	The Collective SD	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “The Collective provides marketing services to companies in need of entire or partial marketing departments through strategic planning.” Source: RevenueBase Database · checked Sep 28, 2026
16	Solid State Marketing	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “We are a team from San Diego, California, that was fed up with seeing small to medium-sized businesses being eaten alive in this rough economy.” Source: RevenueBase Database · checked Sep 28, 2026
17	Nephila Marketing, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “For nearly two decades, Nephila has partnered with emerging technology companies to help bring their products to market, drive pipeline, and share in the exciting journey of…” Source: RevenueBase Database · checked Sep 28, 2026
18	Hearth Agency, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Hearth Agency is a full-service marketing + advertising agency specializing in real estate.” Source: RevenueBase Database · checked Sep 28, 2026
19	Project Good Work	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Project Good Work is a boutique marketing group focused on helping individuals and organizations launch social impact projects, charities, and change-making initiatives.” Source: RevenueBase Database · checked Sep 28, 2026
20	CTZN	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “CTZN a full service marketing agency that supports some of the most innovative, fastest-growing brands in the food & beverage, fashion, wellness & beauty industries.” Source: RevenueBase Database · checked Sep 28, 2026
21	Tower Agency	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Tower Agency was founded in 2010 to leverage inbound marketing strategies for small business clients.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mint Marketing	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	2 contacts →
	Partial evidence “MINT MARKETING is a marketing agency designed around a simple premise: To provide small and medium sized businesses with access to strategic marketing expertise that large…” Source: RevenueBase Database · checked Sep 28, 2026
23	Jeddxm	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “With over 15 years of agency experience in the marketing and advertising industry, JEDDXM brings to the table a proven track record in experiential marketing, strategic event…” Source: RevenueBase Database · checked Sep 28, 2026
24	Munger & Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Munger & Company creates and implements marketing strategies with real business results - primarily new sales leads and revenue growth.” Source: RevenueBase Database · checked Sep 28, 2026
25	Cravo Marketing	Indirect evidence	San Diego, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “After working for years at large corporations, we realized how smaller businesses are at a disadvantage.” Source: RevenueBase Database · checked Sep 28, 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: grassroots 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 grassroots marketing agencies.
Partial evidence: Its own public description names part of grassroots marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grassroots 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 25 of 99 grassroots marketing agencies based in San Diego, United States

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Grassroots marketing agencies based in San Diego, United States at a glance

As of Sep 28, 2026

31.2%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 99 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 grassroots 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 San Diego, United States whose own description of what they do matches “grassroots 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 grassroots 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 grassroots marketing agencies, and records with no verified work email. Companies headquartered outside San Diego 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, 207 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 28, 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.

Grassroots 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 grassroots 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 grassroots marketing agencies are there based in San Diego, United States?

RevenueBase identified 99 grassroots marketing agencies headquartered in San Diego, 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?

MDG, headquartered in San Diego, tops this list with the largest team on record.

Which city in the United States has the most grassroots marketing agencies?

New York leads the United States with 364 headquartered companies, followed by Los Angeles (291) and Miami (144). San Diego has 99.

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 207 verified decision-maker contacts tracked across these 99 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 28, 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.