Company lists · Data verified August 2026

Top 25 Advertising agencies based in Los Angeles, United States

Name: Advertising agencies based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,195 companies tracked

There are 1,195 advertising agencies headquartered in Los Angeles, United States (RevenueBase, August 2026). RevenueBase tracks 14,665 professional contacts across them, including 5,476 with verified work emails and 5,467 with mobile numbers. New York is the largest hub.

This list covers advertising agencies headquartered in Los Angeles, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,195Companies

14,665Contacts tracked

5,476Verified emails

5,467Mobile numbers

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The 25 largest advertising agencies based in Los Angeles, United States

Ranked by team size

Top 25 of 1,195 advertising agencies based in Los Angeles, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Horizon Media	Los Angeles, CA	1,001-5,000	2,354	1,588
2	Team ONE	Los Angeles, CA	201-500	720	298
3	Influencer	Los Angeles	n/a	617	138
4	Deutsch	Los Angeles, CA	201-500	378	133
5	Mocean	Los Angeles, CA	51-200	246	155
6	IMRE	Los Angeles, CA	201-500	225	103
7	AKA US	Los Angeles, CA	51-200	215	93
8	Jackson Spalding	Los Angeles, CA	51-200	168	127
9	AV Squad	Los Angeles, CA	51-200	163	113
10	BLT Communications, Esop	Los Angeles, CA	51-200	162	99
11	Buddha Jones	Los Angeles, CA	51-200	142	90
12	Omni Advertising	Los Angeles, CA	51-200	125	79
13	Unfold	Los Angeles, CA	51-200	124	84
14	LA	Los Angeles, CA	51-200	123	77
15	Ignition Creative	Los Angeles	201-500	121	9
16	MOB Scene	Los Angeles, CA	51-200	118	44
17	Concept Arts INC	Los Angeles, CA	51-200	110	48
18	Hawthorne Advertising	Los Angeles, CA	51-200	98	44
19	The Secret Little Agency	Los Angeles	51-200	86	54
20	Terry Hines & Associates	Los Angeles, CA	51-200	86	2
21	Substance Global	Los Angeles, CA	51-200	78	57
22	Intermedia Advertising	Los Angeles, CA	51-200	78	21
23	TUX	Los Angeles, CA	51-200	77	45
24	King & Partners	Los Angeles, CA	51-200	75	55
25	Acceleration Community Of Companies ACC	Los Angeles, CA	501-1,000	62	11

Showing 25 of 1,195 advertising agencies based in Los Angeles, United States

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Advertising agencies based in Los Angeles, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 1747 HQs

5,467Contacts with mobile numbers

32Emails re-verified in last 30 days

Companies by employee count

1-10

819

11-50

303

51-200

201-500

501-1,000

1,001-5,000

10001+

Advertising agencies by metro in the United States

Metro	Companies
Advertising agencies in New York	1747
Advertising agencies in Los Angeles	1195
Advertising agencies in Chicago	550
Advertising agencies in Miami	542
Advertising agencies in Atlanta	500
Advertising agencies in Dallas	383
Advertising agencies in Houston	345

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “advertising agencies”, with match quality audited by blind human judging, and headquartered in Los Angeles, United States.
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: Contact records re-verify on a rolling cadence; 32 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many advertising agencies are there based in Los Angeles, United States?

There are 1,195 advertising agencies headquartered in Los Angeles, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Horizon Media, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most advertising agencies?

New York leads with 1747 headquartered companies, followed by Los Angeles (1195) and Chicago (550).

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 5,476 verified decision-maker contacts tracked across these 1,195 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.