Company lists · Data refreshed September 2026
Top 25 Corporate communications agencies based in Chicago, United States
RevenueBase identified 98 corporate communications agencies headquartered in Chicago, United States as of September 2026 and tracks 774 professional contacts across them, including 269 with verified work emails. New York is the largest hub.
This list covers corporate communications agencies headquartered in Chicago, 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 19, 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 corporate communications agencies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 80 contacts → | ||||
Partial evidence “Res Publica Group is an independently owned, full-service strategic communications agency.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 54 contacts → | ||||
Indirect evidence “We believe our strength is in helping clients direct-rather than react to-the ongoing conversations about them in the marketplace.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 41 contacts → | ||||
Indirect evidence “L.C.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 35 contacts → | ||||
Partial evidence “The Alpha Companies, including Alpha IR Group and Alpha Advisory Group, deliver fully integrated and comprehensive Investor Relations, Communications, Issues & Crisis Management…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 20 contacts → | ||||
Indirect evidence “Rise Strategy Group is a high stakes public strategy firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 contacts → | ||||
Partial evidence “Reputation Partners (RP) is a national strategic communications and public relations firm exclusively focused on building, protecting and restoring organizational and leadership…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Partial evidence “Named Employee Communications Agency of the Year by PRovoke Media, and twice-named Boutique Agency of the Year by PRWeek, Chicago-based The Grossman Group helps leaders and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 17 contacts → | ||||
Partial evidence “Heron is an award-winning, premier lifestyle communications agency.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 15 contacts → | ||||
Partial evidence “O’Malley Hansen Communications is a brand-building agency with core competencies in consumer public relations, cause marketing, social media, issues & crisis management and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 contacts → | ||||
Indirect evidence “For more than 25 years, Resolute Public Affairs and Resolute Strategic Services have helped organizations navigate complex challenges, protect their reputations and communicate…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Partial evidence “Mac Strategies Group is an award-winning strategic communications, public affairs, and government relations firm with offices in Chicago and Springfield, Illinois.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Partial evidence “The Branded Agency brings a unique mindset to strategic communications, founded on the principle of providing senior-level integrated agency services, which are otherwise…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Partial evidence “For more than two decades, Serafin & Associates, Inc,(Serafin) has delivered cutting-edge, full-service communications and public affairs strategies to clients seeking a trusted…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Strong evidence “Jeff Winton Associates is a full-service team of seasoned and proven corporate affairs and communications strategists with extensive global experience in highly diverse industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Partial evidence “TC Public Relations is a dynamic team of communications professionals with a mission to provide excellence in public relations services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Strong evidence “RCG is a corporate communications consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Strong evidence “Beaman Incorporated is a full-service communications firm that specializes in media relations, corporate communications, advertising and community outreach on a local and national…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Partial evidence “Bear Icebox Communications is a Chicago-based strategic communications and public relations agency that helps companies and organizations break through with clear messaging and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Partial evidence “Aileron provides strategic communications services with a focus on clean energy, infrastructure and advanced manufacturing in 26 states and counting.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Strong evidence “Skoog is an integrated communications and marketing agency that provides public relations, content marketing, corporate communications, branding, social media, events, and design…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Partial evidence “SF Consulting Services is a full-service communication business dedicated to implementing highly individualized public relations and marketing strategies to achieve optimal…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Indirect evidence “We don't drift.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Strong evidence “SGA is an award-winning, boutique public relations and strategic communications agency bringing creative storytelling to corporate clients.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Partial evidence “Founded in 2003, CS-Effect (formerly Communication Strategies Group, a Chicago-based strategic communications agency, works with clients to achieve their business and…” Source: RevenueBase Database · checked Sep 19, 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: corporate 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 corporate communications agencies.
- Partial evidence
- Its own public description names part of corporate communications agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name corporate 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 98 corporate communications agencies based in Chicago, United States
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Corporate communications agencies based in Chicago, United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 98 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 corporate 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 Chicago, United States whose own description of what they do matches “corporate 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 corporate 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 corporate communications agencies, and records with no verified work email. Companies headquartered outside Chicago 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, 269 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 19, 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.
Corporate communications agencies by metro in the United States
- Corporate communications agencies in New York368
- Corporate communications agencies in Washington177
- Corporate communications agencies in Los Angeles125
- Corporate communications agencies in Chicago98
- Corporate communications agencies in Miami68
- Corporate communications agencies in San Francisco67
- Corporate communications agencies in Atlanta62
- Corporate communications agencies in Dallas59
- Corporate communications agencies in Boston57
- Corporate communications agencies in Austin52
- Corporate communications agencies in Houston44
- Corporate communications agencies in Denver43
- Corporate communications agencies in Minneapolis42
- Corporate communications agencies in Philadelphia41
- Corporate communications agencies in Portland32
- Corporate communications agencies in Seattle29
- Corporate communications agencies in San Diego28
- Corporate communications agencies in New York City27
- Corporate communications agencies in Alexandria26
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 corporate 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 corporate communications agencies are there based in Chicago, United States?
RevenueBase identified 98 corporate communications agencies headquartered in Chicago, 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?
RES Publica Group, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most corporate communications agencies?
New York leads with 368 headquartered companies, followed by Washington (177) and Los Angeles (125).
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 269 verified decision-maker contacts tracked across these 98 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 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 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.
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