Top 100 SEO Companies in California
The Best of May 2026Looking 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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811$25,000+10 - 49 employeesCalabasas, CABidWaves, a social media marketing company, was founded in 2025. The team focuses on Social Media Marketing and Search Engine Optimization and is based in Calabasas, California.Read More
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812$10,000+10 - 49 employeesWhittier, CACause Hack is a Content Marketing company. They focus on Content Marketing and Search Engine Optimization and are based in Whittier, California.Read More
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813Undisclosed10 - 49 employeesPismo Beach, CAFinfrock Marketing is a Pismo Beach, California-based SEO services firm. The small agency was founded in 2010. Their services include Search Engine Optimization, Web Design, Marketing Strategy, Content Marketing, and more.Read More
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814$1,000+10 - 49 employeesLaguna Hills, CAAmanrasoft is a Digital Strategy company founded in 2015. The small Laguna Hills, California-based team focuses on Digital Strategy, Social Media Marketing, Search Engine Optimization, Graphic Design, and more.Read More
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815$5,000+10 - 49 employeesLos Angeles, CAES Advertising, Inc. Is a Digital Strategy company. They were established in 1999, and their services include Digital Strategy and Search Engine Optimization.Read More
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816$5,000+10 - 49 employeesSan Francisco, CAAdvertising company Blackbelt was established in 2015. The firm offers Advertising and Branding.Read More
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817$5,000+10 - 49 employeesLong Beach, CAETA Agency is an Advertising company. The team focuses on Advertising and Branding and is in Long Beach, California.Read More
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818Undisclosed10 - 49 employeesBakersfield, CADeprigo, Inc. Is a branding firm launched in 2017. The team focuses on Branding and Graphic Design and is based in Bakersfield, California and.Read More
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819Undisclosed10 - 49 employeesSan Diego, CAThe Coast Creative is an Advertising company. Based in San Diego, California, the firm was founded in 2018. Their team offers Advertising and Digital Strategy.Read More
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820Undisclosed10 - 49 employeesVisalia, CALoops Marketing is a web design agency. The Visalia, California-based company was established in 2012. Their team specializes in Web Design and Graphic Design.Read More
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821Undisclosed10 - 49 employeesCalabasas, CAIn Calabasas, California, Digital Standout is an Advertising company. Founded in 2014, the team specializes in Advertising and Pay Per Click.Read More
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822Undisclosed10 - 49 employeesSimi Valley, CALilikoi agency is a Simi Valley, California-based Advertising company. Their services include Advertising and Marketing Strategy.Read More
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823$5,000+10 - 49 employeesLos Angeles, CARead More
Founded in 2017 NITRO PLUG Digital Marketing is located in Los Angeles. With about 10 employees, they provide digital strategy, social media marketing, and email marketing services to enterprise, midmarket, and small businesses. They focus on business services and information technology industries.
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LA Home RemodelingIndustries
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824$1,000+10 - 49 employeesRamona, CAForce0six, a media planning and buying agency, specialize in Media Planning & Buying and Pay Per Click. They were launched in 2015.Read More
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825$5,000+10 - 49 employeesIrvine, CAClarity Digital Agency is a SEO services firm. Launched in 2018, their team specializes in Search Engine Optimization and Pay Per Click.Read More
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826$1,000+10 - 49 employeesCitrus Heights, CAAtria Web Solutions is a small social media marketing company. They specialize in Social Media Marketing and Search Engine Optimization and were established in 2003.Read More
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827Undisclosed10 - 49 employeesLos Angeles, CAIn Los Angeles, California and Madrid, Spain, Presenzia Digital Marketing is an e-commerce development company. Their services include E-Commerce Development and Social Media Marketing.Read More
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828$5,000+2 - 9 employeesLong Beach, CAIffel International Inc., an Advertising company, was launched in 2006. In Long Beach, California and Anaheim, California, the team focuses on Advertising and Branding.Read More
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829$5,000+2 - 9 employeesLong Beach, CAHeadquartered in Long Beach, California, Proactive SEO Solutions is an Advertising company. They offer Advertising and Branding.Read More
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830$5,000+2 - 9 employeesLos Angeles, CABad Assembly, an Advertising company, was established in 2006. The firm offers Advertising and Branding.Read More
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831$5,000+2 - 9 employeesSan Francisco, CASmall Advertising company glassCanopy, is based in San Francisco, California. Their services include Advertising and Branding.Read More
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832$1,000+2 - 9 employeesLos Angeles, CASocial media marketing firm Pink Shark Marketing is in Los Angeles, California. They specialize in Social Media Marketing and Advertising.Read More
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833$1,000+2 - 9 employeesRichmond, CAAngelsmith is an Advertising company. They focus on Advertising and Social Media Marketing and were founded in 2001.Read More
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834$5,000+2 - 9 employeesRiverside, CAACU Web is a social media marketing firm. Founded in 2005, the agency provides Social Media Marketing and Search Engine Optimization.Read More
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835$5,000+10 - 49 employeesSan Diego, CACampaign Creators is a SEO services firm. The San Diego, California-based team focuses on Search Engine Optimization and Web Design.Read More
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836$5,000+250 - 999 employeesSan Ramon, CAHeadquartered in San Ramon, California and Reading , England, Synverse is an Accounting company. They specialize in Accounting and Advertising.Read More
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837Undisclosed10 - 49 employeesLong Beach, CAThe Clay Media is a website development firm launched in 2011. Their services include Web Development and Content Marketing.Read More
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838$1,000+2 - 9 employeesPasadena, CAHolistic SEO Company is a small Digital Strategy company based in Pasadena, California. The team provides Digital Strategy and Pay Per Click.Read More
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839Undisclosed2 - 9 employeesSacramento, CABranding agency Emerge Marketing Strategies is in Sacramento, California. The team provides Branding and Marketing Strategy.Read More
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840Undisclosed2 - 9 employeesSan Diego, CAPolar Mass is a small San Diego, California-based SEO services firm. Their services include Search Engine Optimization and Pay Per Click.Read More
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