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Top Advertising Companies in California

52 of 134 advertising companies ranked on evidence in the Q4 2026 edition.

Between them, the 134 best-ranked of these 138 advertising companies cover advertising (37), creative (34), consumer products & services (28) and business services (25). They also list work in Los Angeles, San Diego, New York and York. 134 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

52 of 134 advertising companies ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All advertising companies 52 ranked SMEs 52 ranked

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Blackthorn Publishing
Blackthorn Publishing is a media, marketing and design agency based in Los Angeles, California.
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Why #1: Based in Los Angeles, California · Founded 2013 · Shopify partner, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Deviate Labs, LLC
Consumer Products & Services · Arts, Entertainment & Music · Hospitality & Leisure
Deviate Labs, LLC is a growth marketing agency based in Los Angeles.
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Why #2: Based in Los Angeles, California, US · Founded 2014 · Client numbers stated on its own website, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
JP Marketing
Business Services · Financial Services · Real Estate
JP Marketing was an advertising agency in California that has since renamed itself HYPHEN.
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Why #3: Based in Fresno, California, US, with an office in Sacramento · In business 30+ years · Team of 26+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Davis Elen
Consumer Products & Services · Financial Services · Automotive
Davis Elen is an independent advertising agency on the US West Coast with more than 75 years of history.
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Why #4: Based in Los Angeles, California, United States · In business 75+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Davies Associates, Inc.
Advertising · Creative · Retail
Working from Los Angeles since 1980, Davies Associates, Inc. brings more than forty years of multi-disciplinary design work to its clients.
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Why #5: Based in Los Angeles, California, USA · Founded 1980, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Gumas
Financial Services · Information Technology · Digital Marketing
An advertising agency in San Francisco, Gumas works with a method it calls Challenger Brand Marketing, built for organizations that face larger, better-resourced rivals.
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Why #6: Based in San Francisco, California, USA · Founded 1984, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Ekc PR
Social Media Management · Digital Marketing · Reputation Management
EKC PR, also known as Eileen Koch and Company, is a public relations, branding and digital marketing firm headquartered in Los Angeles and Beverly Hills, California.
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Why #7: Based in Los Angeles and Beverly Hills, California · In business 38+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Brandtailers
Also in Newport
Brandtailers is a marketing and creative agency in Newport Beach, California, working since 1990.
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Why #8 (shared): Based in Newport Beach, California · Founded 1990, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
A Hundred Monkeys
Consumer Products & Services · Arts, Entertainment & Music · Gaming
A Hundred Monkeys is a naming and writing studio in Berkeley, California, working since 1990.
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Why #8 (shared): Based in Berkeley, California, US · Founded 1990, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Decca Design
Branding · Environmental
Decca Design is a full-service design and marketing agency in San Jose, California, with 35 years of history in Silicon Valley.
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Why #10: Based in San Jose, California, USA · In business 35+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
IDG Advertising
Advertising · Creative · Also in Orange County
IDG Advertising is a full-service marketing agency in Anaheim, Orange County, California, and has operated since 1992.
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Why #11: Based in Anaheim, Orange County, California · Founded 1992, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Epic Ad Group
Advertising · Goals · Also in Santa Barbara, Ca
Epic Ad Group is an advertising agency serving businesses on the Central Coast of California. It says it has provided marketing services there since 1993.
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Why #12: Based in Santa Barbara, California · Founded 1993, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
IBCnet
Supply Chain, Logistics, and Transport · Arts, Entertainment & Music · Hospitality & Leisure
IBCnet, a web development and design firm in Los Angeles, California, dates its work to 1994.
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Why #13: Based in Los Angeles, California, USA · Founded 1994, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Farinella LLC
Consumer Products & Services · Arts, Entertainment & Music · Hospitality & Leisure
Clarity before cleverness is the working principle of Farinella LLC, a branding and marketing agency near Oakland, California.
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Why #14 (shared): Based in Near Oakland, California, United States · In business 30+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Lagrant Communications
Los Angeles communications agency marketing to Hispanic, African American and LGBTQIA+ audiences for corporate and public clients
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Why #14 (shared): Based in Los Angeles, California, USA · In business 30+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
DigitalFirst.us
Consumer Products & Services · Hospitality & Leisure · Business Services · Also in Reading
Television, radio and digital media for businesses without marketing staff In Fresno, California, DigitalFIRST.us works as an advertising consultancy that has offered digital media…
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Why #14 (shared): Based in Fresno, California, USA · Founded 1996, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
559 Graphics
559 Graphics is a web design and marketing studio in Fresno, California.
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Why #14 (shared): Based in Fresno, California · In business 30+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Krasovetz Consulting
Digital Marketing · Web Design · SEO · Also in Virginia and Los Angeles
Krasovetz Consulting is listed as a digital marketing agency in San Diego, California, and its website trades under the name Digital Creatives.
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Why #14 (shared): Based in San Diego, California · In business 30+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Irep Inc
Consumer Products & Services · Arts, Entertainment & Music · Energy & Natural Resources · Also in Japan
Companies from overseas that want customers in Japan and the rest of Asia can turn to Irep Inc, a digital marketing agency headquartered in Tokyo with a second base around San…
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Why #19 (shared): Address in California · Founded 1997, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Boylan Point Agency
Sonoma County marketing agency covering websites, search marketing, branding and traditional advertising for local businesses
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Why #19 (shared): Based in Santa Rosa, California · Founded 1997, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
ES Advertising, Inc.
Arts, Entertainment & Music · Financial Services · Advertising
ES Advertising, Inc. is a full-service advertising agency based in Los Angeles.
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Why #21: Based in Los Angeles, California · Founded 1999, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Immix Productions Inc.
Since 2001, Immix Productions Inc. has run its studio from Houston, mainly for clients in energy.
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Why #22 (shared): Office in California · Founded 2001, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Elkins Advertising
Working from San Jose, Elkins Advertising brings national branding and advertising principles to businesses across Northern California.
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Why #22 (shared): Based in San Jose, California · In business 25+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
dystrick design
Creative · Branding · Video · Also in San Francisco Bay Area
Under the dystrick design name, the San Jose studio handles branding, web design and web development as one practice.
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Why #22 (shared): Based in San Jose, Silicon Valley, California · In business 25+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.

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Top Advertising Companies in California

Blackthorn Publishing

Deviate Labs, LLC

JP Marketing

Davis Elen

Davies Associates, Inc.

Gumas

Ekc PR

Brandtailers

A Hundred Monkeys

Decca Design

IDG Advertising

Epic Ad Group

IBCnet

Farinella LLC

Lagrant Communications

DigitalFirst.us

559 Graphics

Krasovetz Consulting

Irep Inc

Boylan Point Agency

ES Advertising, Inc.

Immix Productions Inc.

Elkins Advertising

dystrick design

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