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Company lists · Data refreshed September 2026

Top 25 Online advertising agencies based in Chicago, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 408 companies tracked

RevenueBase identified 408 online advertising agencies headquartered in Chicago, United States as of September 2026 and tracks 2,506 professional contacts across them, including 543 with verified work emails. New York is the largest hub.

This list covers online advertising 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
408Companies
2,506Contacts tracked
543Verified emails
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The 25 largest online advertising agencies based in Chicago, United States

Ranked by team size
Top 25 of 408 online advertising agencies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names online advertising agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Galactic FED Digital Marketing AgencyIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200137

“Galactic Fed is a full-service digital marketing agency focused on one thing: HELPING BUSINESSES GROW THEIR REVENUE.”

Source: company website · checked Sep 5, 2026
2
Digital Authority PartnersIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20095

“Digital Authority Partners (DAP) is an integrated digital agency that blends data-driven insights and innovative problem solving to help companies evolve, compete and grow in a…”

Source: company website · checked Sep 5, 2026
3
Orbit Media StudiosIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20070

“Orbit is an award-winning digital marketing and web design agency based in Chicago.”

Source: company website · checked Sep 5, 2026
4
EnvisionitIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20069

“Envisionit is an award-winning, full-service digital marketing agency headquartered in Chicago with in-house Media, Creative, Tech, Strategy and Analytics teams.”

Source: company website · checked Sep 5, 2026
5
Logical Media GroupIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5045

“Logical Media Group is a full-service digital marketing agency located in the River North neighborhood of Chicago.”

Source: company website · checked Sep 5, 2026
6
Identity Dental MarketingIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5039

“Identity Dental Marketing was founded on a passion for helping dentists thrive in the digital age.”

Source: company website · checked Sep 5, 2026
7
BE Found Online BFOIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5036

“At a time when the digital world is changing day to day, brands need more than another skillful vendor.”

Source: company website · checked Sep 5, 2026
8
Comrade Digital Marketing AgencyIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20034

“You run the business.”

Source: company website · checked Sep 5, 2026
9
I-ProwessIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5024

“Since 2016, we’ve been your trusted partner in cutting-edge digital marketing and performance-driven success.”

Source: company website · checked Sep 5, 2026
10
Market Jd, INCPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5019

“A leading provider of online marketing for lawyers, Market JD is an interactive agency that will help your firm promote its services on the Internet, in print, and on television…”

Source: company website · checked Sep 5, 2026
11
SEO Design ChicagoStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5019

“SEO Design Chicago works with companies looking to increase their brand presence and grow their business through online digital advertising.”

Source: company website · checked Sep 5, 2026
12
Perfect Search MediaIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5019

“Perfect Search Media is a top-rated, Chicago-based digital marketing agency.”

Source: company website · checked Sep 5, 2026
13
FortressPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5018

“Fortress Consulting combines the creative strengths of a full service advertising agency with the technical skills of a cutting edge digital media firm.”

Source: company website · checked Sep 5, 2026
14
Freedom MediaIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5018

“At FREEDOM Media, we are a growth and retention-focused digital marketing agency passionate about scaling brands to new heights.”

Source: company website · checked Sep 5, 2026
15
Ds&p Digital Marketing & PR AgencyIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5017

“DS & P is an digital marketing agency offering SEO, PPC, Social Media Management, Crowd-Funding, Website Development and Branding Solutions.”

Source: company website · checked Sep 5, 2026
16
MatchnodeIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261-1016

“Matchnode is an ROI-focused internet marketing company that serves its clients in the areas of digital strategy, traffic generation, and conversion optimization.”

Source: company website · checked Sep 5, 2026
17
DHS DigitalIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5016

“DHS Digital is a Chicago-based digital technology agency founded in 2005.”

Source: company website · checked Sep 5, 2026
18
Pilot Digital MarketingIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5015

“Comprehensive Internet marketing strategies and solutions.”

Source: company website · checked Sep 5, 2026
19
Yellow BOXIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5015

“HubSpot Partner Agency | Google Partner Agency | Good People We are the rare agency in that we spend more time in Excel than Photoshop.”

Source: company website · checked Sep 5, 2026
20
Xamtac ConsultingIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5015

“Digital Marketing Agency that takes a scientific approach to -Digital Marketing -Paid Ad Platforms -Marketing Creatives -Landing Pages -Email/SMS Campaigns & Automated Flows…”

Source: company website · checked Sep 5, 2026
21
Comboapp Inc.Indirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5015

“ComboApp was founded in 2009 and has undergone several growth phases to become a truly global full service digital marketing solutions provider.”

Source: company website · checked Sep 5, 2026
22
GULOIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261-1014

“From our offices in Chicago and Cincinnati, the Gulo team primarily helps B2B and DTC companies with Web Design, Content Marketing, SEO, and Conversion Rate Optimization.”

Source: company website · checked Sep 5, 2026
23
Empro, LTDIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261-1014

“Helping brands grow is what we do.”

Source: company website · checked Sep 5, 2026
24
Arc4Indirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5013

“At Arc4, we empower businesses to grow by creating high-performing websites and enhancing their visibility in local search results.”

Source: company website · checked Sep 5, 2026
25
Ekhos Agency EchoesIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261-1013

“Passionate about health and wellness, we’re a data-driven marketing team of experts dedicated to developing the best digital marketing strategies for wellness brands.”

Source: company website · checked Sep 5, 2026

Showing 25 of 408 online advertising agencies based in Chicago, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 543 reachable decision-makers.

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Online advertising agencies based in Chicago, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 1111 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
289
11-50
94
51-200
19
201-500
2
501-1,000
3

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 408 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 online advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “online advertising agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among online advertising 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 an evidence 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, 543 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 5, 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.

Online advertising agencies by metro in the United States

Frequently asked

How many online advertising agencies are there based in Chicago, United States?

RevenueBase identified 408 online advertising 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?

Galactic FED Digital Marketing Agency, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most online advertising agencies?

New York leads with 1111 headquartered companies, followed by Los Angeles (769) and Miami (613).

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 543 verified decision-maker contacts tracked across these 408 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 408 online advertising agencies based in Chicago, United States. Start with a free account, no credit card.

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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.

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