Company lists · Data refreshed September 2026

Top 25 Internal communications agencies based in San Francisco, United States

Name: Internal communications agencies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 61 companies tracked

RevenueBase identified 61 internal communications agencies headquartered in San Francisco, United States as of September 2026 and tracks 1,451 professional contacts across them, including 410 with verified work emails. New York is the largest hub.

This list covers internal communications agencies headquartered in San Francisco, 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 20, 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 20, 2026 86% judged on-target in blind review

61Companies

1,451Contacts tracked

410Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest internal communications agencies based in San Francisco, United States

Ranked by team size

Top 25 of 61 internal communications agencies based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to internal communications 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	Mixing Board, Powered By Axios	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	n/a	197 contacts →
	Indirect evidence “Mixing Board is a community of top professionals who share insights, support each other, and seek to elevate the industry at large.” Source: RevenueBase Database · checked Sep 20, 2026
2	Inkhouse, An Orchestra Company	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	152 contacts →
	Partial evidence “A strategic communications agency, Inkhouse partners with innovators who are creating new markets or disrupting old ones-crafting stories and meeting audiences where they are.” Source: RevenueBase Database · checked Sep 20, 2026
3	Outcast	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Partial evidence “Outcast is an integrated marketing agency specializing in communications, digital, and creative.” Source: RevenueBase Database · checked Sep 20, 2026
4	Bite Communications	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	96 contacts →
	Indirect evidence “We help category-defining brands make their mark through hard-working, creative campaigns that change perceptions and spark action.” Source: RevenueBase Database · checked Sep 20, 2026
5	Access Brand Communications	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	76 contacts →
	Indirect evidence “For 25 years, we’ve helped companies access new audiences in new ways.” Source: RevenueBase Database · checked Sep 20, 2026
6	Segal Benz	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	75 contacts →
	Partial evidence “Segal Benz is the communications consulting practice within Segal, a leading employee-owned consulting firm with more than 1,100 professionals.” Source: RevenueBase Database · checked Sep 20, 2026
7	Duncan Channon	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	71 contacts →
	Indirect evidence “A four-time Ad Age Small Agency of the Year, Duncan Channon is a full-service creative shop with a 360º offering including social, experiential and influencer.” Source: RevenueBase Database · checked Sep 20, 2026
8	Godfrey Dadich Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	62 contacts →
	Indirect evidence “Godfrey Dadich Partners (GDP) brings together designers, journalists, strategists, engineers, and more to help brands communicate.” Source: RevenueBase Database · checked Sep 20, 2026
9	Horn Group	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	37 contacts →
	Partial evidence “Horn Group is an award-winning digital communications agency.” Source: RevenueBase Database · checked Sep 20, 2026
10	Sutherlandgold	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	30 contacts →
	Partial evidence “Sutherlandgold is a full-service integrated communications agency creating inspired stories for standout brands.” Source: RevenueBase Database · checked Sep 20, 2026
11	HUB	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “If a small-ish agency is to be truly adept at integrated marketing, that means they'd have to hire creatives that can work in all mediums.” Source: RevenueBase Database · checked Sep 20, 2026
12	Double Forte	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Partial evidence “Double Forte is an independent strategic communications and digital media agency representing beloved brands making positive change in the consumer lifestyle, technology, digital…” Source: RevenueBase Database · checked Sep 20, 2026
13	BOKEH	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “WE ARE NOT AD PEOPLE (although we do advertising).” Source: RevenueBase Database · checked Sep 20, 2026
14	Bateman Agency INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	21 contacts →
	Partial evidence “A strategic communications agency built from the ground up equally committed to hitting strict diversity metrics and providing full financial and salary transparency to all.” Source: RevenueBase Database · checked Sep 20, 2026
15	Segal Communications	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Segal Communications is an award-winning consumer marketing communications agency headquartered in the heart of San Francisco.” Source: RevenueBase Database · checked Sep 20, 2026
16	Nectar Communications	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	15 contacts →
	Indirect evidence “Elevating the voices and stories of tech-forward companies who impact our world.” Source: RevenueBase Database · checked Sep 20, 2026
17	Gauger Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “A dynamic and collaborative marketing communications agency creating big ideas by telling powerful brand stories that inspire belief through unexpected thinking.” Source: RevenueBase Database · checked Sep 20, 2026
18	Trier And Company	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “Trier and Company is an award-winning global, integrated communications agency.” Source: RevenueBase Database · checked Sep 20, 2026
19	The M-Line	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1-10	10 contacts →
	Partial evidence “Award Winning Creative Communications The M-Line is a full-service marketing communications agency in San Francisco, California.” Source: RevenueBase Database · checked Sep 20, 2026
20	Tungsten	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Tungsten Advertising is a full-service advertising agency based in San Francisco.” Source: RevenueBase Database · checked Sep 20, 2026
21	Mackenzie	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “MacKenzie is an independent marketing communications agency with a reputation for building reputations.” Source: RevenueBase Database · checked Sep 20, 2026
22	Actual Agency A Millwright Agency	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “Actual Agency is a strategic communications firm specializing in transformative communications by transforming your most important B2B stories into critical business outcomes.” Source: RevenueBase Database · checked Sep 20, 2026
23	US Agency	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “Us in a nutshell: We’re your outside in-house agency.” Source: RevenueBase Database · checked Sep 20, 2026
24	Bonner Communications	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A talented team of communicators and creatives, that craft messaging, tell stories and design brands.” Source: RevenueBase Database · checked Sep 20, 2026
25	Sherwood Communications	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial evidence “A full service communications agency specializing in public relations and corporate development.” Source: RevenueBase Database · checked Sep 20, 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: internal communications 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 internal communications agencies.
Partial evidence: Its own public description names part of internal communications agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name internal communications 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 61 internal communications agencies based in San Francisco, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 410 reachable decision-makers.

Free signup · no credit card

View the full list →

Internal communications agencies based in San Francisco, United States at a glance

As of Sep 20, 2026

28.3%Verified-email coverage

23.8Average contacts per company

1-10Median size (employees)

441.0%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 61 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 internal communications 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 Francisco, United States whose own description of what they do matches “internal communications 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 internal communications 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 internal communications agencies, and records with no verified work email. Companies headquartered outside San Francisco 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, 410 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 20, 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.

Internal communications 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 internal communications 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 internal communications agencies are there based in San Francisco, United States?

RevenueBase identified 61 internal communications agencies headquartered in San Francisco, 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?

Mixing Board, Powered By Axios, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most internal communications agencies?

New York leads with 269 headquartered companies, followed by Chicago (89) and Los Angeles (72).

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 410 verified decision-maker contacts tracked across these 61 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 61 internal communications agencies based in San Francisco, United States. Start with a free account, no credit card.

Download this list →

Related lists

Internal communications agencies by geography

Browse the directory

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.