Top 100 SEO Companies in California
The Best of April 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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2341Undisclosed10 - 49 employeesRocklin, CARVNW Studios, a branding agency, is headquartered in Rocklin, California. Their services include Branding and Web Design.Read More
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2342$10,000+10 - 49 employeesIrvine, CASocial media marketing firm Digital Innovation Group was launched in 2005. The agency focuses on Social Media Marketing and Pay Per Click.Read More
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2343$10,000+10 - 49 employeesSan Francisco, CAKingpin Communications, a media planning & buying company, was launched in 1997. In London , England and San Francisco, California, the team offers Media Planning & Buying and Advertising.Read More
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2344Undisclosed10 - 49 employeesBeverly Hills, CAGet Visible Digital Marketing Agency, a social media marketing agency, is in Phoenix, Arizona and Beverly Hills, California. They provide Social Media Marketing and Search Engine Optimization.Read More
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2345$5,000+2 - 9 employeesSan Francisco, CALongtail Marketing Agency is a SEO services firm. Their team is in San Francisco, California and focuses on Search Engine Optimization and Pay Per Click.Read More
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2346Undisclosed2 - 9 employeesDavis, CANational Support Solutions is a SEO services firm. The team specializes in Search Engine Optimization and Web Development and is headquartered in Davis, California.Read More
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2347Undisclosed2 - 9 employeesElk Grove, CASmall SEO company ALTIFIDE MARKETING, is located in Elk Grove, California. Their services include Search Engine Optimization and Web Design.Read More
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2348Undisclosed2 - 9 employeesSan Diego, CASmall SEO services firm SmartMetrics, is based in San Diego, California. Their services include Search Engine Optimization and BI & big data consulting & SI.Read More
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2349Undisclosed10 - 49 employeesPleasanton, CANavolutions is a web design agency. Founded in 2008, the agency provides Web Design and Search Engine Optimization.Read More
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2350Undisclosed10 - 49 employeesLoma Linda, CAMagic Technologies Group is a web development firm based in Loma Linda, California. Their services include Web Development and E-Commerce Development.Read More
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2351Undisclosed10 - 49 employeesCosta Mesa, CAWebsite development firm All In Orbit is based in Costa Mesa, California. They offer Web Development and Mobile App Development.Read More
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2352Undisclosed10 - 49 employeesFullerton, CAEstablished in 1999, Supreme Solutions, Inc., a small web design agency, is located in Fullerton, California. Their services include Web Design and Graphic Design.Read More
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2353Undisclosed10 - 49 employeesIrvine, CAIn Irvine, California, CineWeb Studio is a small Advertising company. Their services include Advertising and Search Engine Optimization.Read More
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2354Undisclosed10 - 49 employeesLos Angeles, CASEO Agency Los Angeles is a small Los Angeles, California-based SEO company. Their services include Search Engine Optimization and Content Marketing.Read More
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2355$1,000+50 - 249 employeesThousand Oaks, CAHeadquartered in Thousand Oaks, California, RANKGIANT is a Content Marketing company. They offer Content Marketing and Pay Per Click.Read More
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2356Undisclosed50 - 249 employeesIrvine, CAMy Webteam is an Irvine, California-based Content Marketing company. They provide Content Marketing and Search Engine Optimization and were founded in 1998.Read More
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2357UndisclosedFreelancer employeesSan Diego, CAWebamplo, a small SEO company and web design agency, is based in San Diego, California. Their services include Search Engine Optimization and Web Design.Read More
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2358$5,000+10 - 49 employeesSan Jose, CAGaian Consultants is an Advertising company founded in 2006. The team specializes in Advertising and Branding and is in San Jose, California and Hyderabad, India.Read More
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2359$1,000+50 - 249 employeesSt. Helena, CASayone digital is an Advertising company. They provide Advertising and Social Media Marketing and were established in 2011. The company is based in Kakkanad, India and St. Helena, California.Read More
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2360$50,000+50 - 249 employeesLos Angeles, CALocated in Montreal, Canada and Quebec City, Canada, Tink is a midsize user experience agency. The team provides UX/UI Design and Mobile App Development.Read More
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2361$5,000+2 - 9 employeesSan Francisco, CAHDSF is a branding agency. Established in 2003, the team focuses on Branding and Advertising. The agency is headquartered in San Francisco, California.Read More
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2362$5,000+2 - 9 employeesBerkeley, CAIn Berkeley, California, RadiantBrands is a small Market Research company. Their services include Market Research and Digital Strategy.Read More
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2363$1,000+2 - 9 employeesLos Angeles, CABright Age Digital Creative Agency is a small social media marketing company founded in 2013. Their team offers Social Media Marketing and Branding.Read More
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2364$5,000+2 - 9 employeesLos Angeles, CABYStudio is a web design company. The Los Angeles, California-based agency specializes in Web Design and Product Design.Read More
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2365$5,000+2 - 9 employeesLos Angeles, CAThe Web Corner, Inc. Is a web design agency established in 2004. Their team provides Web Design and Web Development.Read More
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2366$5,000+2 - 9 employeesSimi Valley, CAISOOSI Marketing Agency is a graphic design agency based in Naples, Florida and Simi Valley, California. They offer Graphic Design and Mobile & App Marketing and were founded in 2002.Read More
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2367$5,000+2 - 9 employeesSignal Hill, CAZuno Design Studios is a branding company. Established in 2007, the firm is in Signal Hill, California. Their team specializes in Branding and Web Design.Read More
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2368$5,000+2 - 9 employeesSan Francisco, CAPier2 Marketing, a Market Research company, was founded in 2007. The agency specializes in Market Research and Branding.Read More
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2369$5,000+2 - 9 employeesSan Francisco, CAAgencyAxis is a small Advertising company located in San Francisco, California. The team provides Advertising and Branding.Read More
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2370$10,000+2 - 9 employeesSan Francisco, CAOliver + Sons is a San Francisco, California-based branding firm. They provide Branding and Media Planning & Buying.Read More
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