Top 100 SEO Companies in California
The Best of December 2025Looking for a top SEO firm in California?
Compare top-performing SEO agencies to see which may be the best fit for your business goals. Whether you're seeking to improve your ranking in search engine results pages, boost website traffic, or show up in local search results, investing in SEO is important for business growth.
To assist you in your search for a partner, we’ve compiled this list of the top SEO companies in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
Jump to Most Reviewed Companies
List of the Best California SEO Firms
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$1,000+50 - 249 employeesSan Antonio, TXFunnel Boost Media is a SEO company. They are located in San Antonio, Texas; Doral, Florida; Boston, Massachusetts and San Francisco, California and have a midsize team that focuses on Search Engine Optimization, Advertising, Pay Per Click, and Web Design. The agency was launched in 2012.Read More
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$1,000+10 - 49 employeesNew York, NYSEO company NuStream is in New York, New York; Philadelphia, Pennsylvania and Allentown, Pennsylvania. They provide Search Engine Optimization, Web Design, Digital Strategy, and Video Production and were established in 2010.Read More
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1621Undisclosed2 - 9 employeesWhittier, CAWeb design agency Grafix Box was established in 2010. The small team provides Web Design and E-Commerce Development.Read More
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1622$5,000+10 - 49 employeesEl Segundo, CAApollo Interactive, a Content Marketing company, was established in 1995. The team specializes in Content Marketing and Email Marketing.Read More
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1623$1,000+10 - 49 employeesLos Angeles, CAHeadquartered in Los Angeles, California, Syndctd is a Content Marketing company. The team offers Content Marketing and Mobile & App Marketing.Read More
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1624$5,000+10 - 49 employeesLa Mesa, CAZD Design Agency is a social media marketing agency. Founded in 2004, their team offers Social Media Marketing and Digital Strategy.Read More
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1625$5,000+10 - 49 employeesCompton, CATräfika, a Mobile & App Marketing company, was established in 2009. Located in Compton, California and Benito Juárez, Mexico, the team provides Mobile & App Marketing and Search Engine Optimization.Read More
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1626$5,000+10 - 49 employeesSan Diego, CATaylor & Pond Interactive is an Advertising company. They were established in 1995, and their services include Advertising and Branding.Read More
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1627$5,000+10 - 49 employeesFresno, CAArcher & Hound Advertising is an Advertising company. Launched in 2006, the team offers Advertising and Branding.Read More
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1628$5,000+10 - 49 employeesClovis, CASolutions By Design, Inc. Is an Advertising company founded in 1983. The agency offers Advertising and Branding.Read More
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1629$5,000+10 - 49 employeesLos Angeles, CASTARMEN Design Group is an Advertising company. They are in Los Angeles, California and have small team of experts. Their services include Advertising and Branding.Read More
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1630$5,000+10 - 49 employeesSacramento, CAAdvertising company Wallrich. Is located in Sacramento, California. Founded in 1990, the team offers Advertising and Branding.Read More
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1631$5,000+10 - 49 employeesSacramento, CACrocker & Crocker, an Advertising company, focuses on Advertising and Branding. The agency is based in Sacramento, California.Read More
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1632$5,000+10 - 49 employeesSan Jose, CAThe Stephenz Group, a small Advertising company, is located in San Jose, California. Their services include Advertising and Branding.Read More
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1633$5,000+10 - 49 employeesEl Segundo, CABased in El Segundo, California and Fresno, California, California Consulting, LLC is a small Advertising company. The team focuses on Advertising and Branding.Read More
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1634$5,000+10 - 49 employeesLong Beach, CALaunched in 2001, Dobie Associates is a small Advertising company in Long Beach, California. Their team specializes in Advertising and Branding.Read More
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1635$5,000+10 - 49 employeesLong Beach, CAApartment SEO, LLC is an Advertising company. They are in Long Beach, California and Orange County, California. Their team offers Advertising and Branding.Read More
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1636$5,000+10 - 49 employeesSanta Monica, CAAgency | 2.0 is an advertising company based in Santa Monica, California. Founded in 2010, the small team focuses on advertising, branding, digital strategy, search engine optimization, and more.Read More
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1637$5,000+10 - 49 employeesSacramento, CAAdmail West is an Advertising company established in 1989. The team provides Advertising and Branding.Read More
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1638$5,000+10 - 49 employeesSacramento, CAMerlot Marketing, Inc. Is a Sacramento, California-based Advertising company. They specialize in Advertising and Branding.Read More
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1639$5,000+10 - 49 employeesSacramento, CADDI Consulting, Inc. Is an Advertising company. Based in Sacramento, California, their team focuses on Advertising and Branding.Read More
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1640$5,000+10 - 49 employeesDavis, CAB2B Communications is an Advertising company. The team provides Advertising and Branding, and the agency is based in Davis, California.Read More
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1641$5,000+10 - 49 employeesSacramento, CASacramento Marketing Inc is an Advertising company. Founded in 2012, the firm is located in Sacramento, California and Long Beach, California. Their team provides Advertising and Branding.Read More
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1642$5,000+10 - 49 employeesSan Diego, CAEREACH is a small Digital Strategy company launched in 2010. Their team provides Digital Strategy and Conversion Optimization.Read More
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1643$5,000+10 - 49 employeesSan Diego, CAAdvertising company Kaleido Creative Studio is headquartered in San Diego, California. They offer Advertising and Branding.Read More
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1644$5,000+10 - 49 employeesCarlsbad, CAAudacity is a small Advertising company based in Carlsbad, California. The team specializes in Advertising and Branding.Read More
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1645$5,000+10 - 49 employeesSan Francisco, CABased in San Francisco, California and Minato City, Japan, btrax, Inc. Is a small Advertising company. Their services include Advertising and Branding.Read More
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1646$5,000+10 - 49 employeesSan Diego, CAIncrease Your Profits is an Advertising company. Launched in 1999, the team provides Advertising and Branding.Read More
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1647$5,000+10 - 49 employeesWalnut Creek, CAPIVOT Marketing Agency is an Advertising company. They are headquartered in Walnut Creek, California and have small team. They specialize in Advertising and Branding.Read More
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1648$5,000+10 - 49 employeesSan Rafael, CAAdvertising company Accelent Consulting LLC is headquartered in San Rafael, California and Gloucester, Massachusetts. Their services include Advertising and Branding.Read More
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1649$5,000+10 - 49 employeesPleasanton, CAConnext is an Advertising company. They provide Advertising and Branding and are in Pleasanton, California.Read More
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1650$5,000+10 - 49 employeesLong Beach, CAGunn/Jerkens Marketing Communications is a small Advertising company in Long Beach, California. Their services include Advertising and Branding.Read More
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Check out a SEO Company in California with the most new reviews in the past 12 months.
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