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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2191$5,000+2 - 9 employeesLos Angeles, CASocial Giant Marketing is a SEO services firm. They specialize in Search Engine Optimization and Digital Strategy and were launched in 2016. The agency is based in Los Angeles, California.Read More
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2192$5,000+2 - 9 employeesSan Jose, CAIn San Jose, California, WEBDOGS is an e-commerce development firm. The team specializes in E-Commerce Development and Digital Strategy.Read More
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2193$5,000+2 - 9 employeesSacramento, CAHolts Brothers Internet Marketing Solutions is a small SEO company and social media marketing firm established in 2014. Their team offers Search Engine Optimization and Social Media Marketing.Read More
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2194Undisclosed2 - 9 employeesBeverly Hills, CASilicon Beach SEO is a Business Consulting and SEO company. In Beverly Hills, California, the team focuses on Business Consulting and Search Engine Optimization.Read More
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2195Undisclosed2 - 9 employeesSacramento, CATech-Line Consulting is a Content Marketing company. Headquartered in Sacramento, California, their team offers Content Marketing and Email Marketing.Read More
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2196Undisclosed2 - 9 employeesFresno, CAIn Fresno, California, Mendez Media Marketing, Inc. Is a branding agency. They provide Branding and Digital Strategy.Read More
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2197Undisclosed2 - 9 employeesSan Rafael, CAPRUnderground.com is a small SEO agency and social media marketing agency in San Rafael, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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2198Undisclosed2 - 9 employeesOxnard, CAMGA Nexus Marketing, a small SEO agency and web design agency, is located in Oxnard, California. Their services include Search Engine Optimization and Web Design.Read More
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2199Undisclosed2 - 9 employeesBakersfield, CAIn Bakersfield, California, Providence Strategic Consulting is a small PR company. The team specializes in Public Relations and Pay Per Click.Read More
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2200Undisclosed2 - 9 employeesFresno, CAFounded in 2010, Vortal Me is a web design company. Based in Fresno, California, the team focuses on Web Design and Web Development.Read More
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2201Undisclosed2 - 9 employeesOakland, CABased in Oakland, California, Sites for Law Firms is a SEO services firm and web design company. The team offers Search Engine Optimization and Web Design.Read More
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2202Undisclosed2 - 9 employeesLong Beach, CASEO services firm and web design company Metaweb Marketing & Design was founded in 2013. Headquartered in Long Beach, California, the team provides Search Engine Optimization and Web Design.Read More
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2203Undisclosed2 - 9 employeesSan Diego, CAHeadquartered in San Diego, California, Wise Swans is a small SEO agency and web design agency. The team specializes in Search Engine Optimization and Web Design.Read More
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2204Undisclosed2 - 9 employeesLake Forest, CAMobile app development company Maxeemize was founded in 2016. The small team provides Mobile App Development and Public Relations.Read More
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2205Undisclosed2 - 9 employeesUpland, CAFounded in 2009, 1st Web Studio is a small Upland, California-based web design agency. Their services include Web Design and Mobile & App Marketing.Read More
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2206Undisclosed2 - 9 employeesMurrieta, CAPixelthon is an Email Marketing company launched in 2011. The small team provides Email Marketing and Mobile & App Marketing.Read More
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2207Undisclosed2 - 9 employeesWalnut Creek, CAEstablished in 2007, Ahilia is a small branding company. Their services include Branding and Event Marketing.Read More
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2208Undisclosed2 - 9 employeesLancaster, CAAV Web Designs, an Advertising company, was founded in 2000. The team offers Advertising and Email Marketing and is located in Lancaster, California.Read More
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2209Undisclosed2 - 9 employeesWalnut Creek, CABranding company Social Pop Creative was launched in 2011. Based in Walnut Creek, California, the team provides Branding and Email Marketing.Read More
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2210Undisclosed2 - 9 employeesUpland, CAAd America is a web design agency. The team specializes in Web Design and Branding, and the company is located in Upland, California.Read More
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2211Undisclosed2 - 9 employeesVisalia, CADMI Agency is an Email Marketing company launched in 1996. Their services include Email Marketing and Graphic Design.Read More
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2212Undisclosed2 - 9 employeesPasadena, CASEO Firepower is an Other Digital Marketing and SEO agency. The team specializes in Other Digital Marketing and Search Engine Optimization, and the firm is in Pasadena, California.Read More
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2213Undisclosed2 - 9 employeesVacaville, CAContent Marketing company Legacy Innovative Solutions was founded in 2014. The team focuses on Content Marketing and Email Marketing.Read More
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2214Undisclosed2 - 9 employeesWalnut Creek, CASomethumb Web Design and Development is a small website development company launched in 2003. Their team offers Web Development and Search Engine Optimization.Read More
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2215Undisclosed2 - 9 employeesVista, CAJewel Web & Design is a Vista, California-based graphic design agency. Launched in 2008, the team offers Graphic Design and Web Design.Read More
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2216Undisclosed2 - 9 employeesVista, CAWeb design company WP Management Team was established in 2001. The team specializes in Web Design and Web Development and is in Vista, California.Read More
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2217Undisclosed2 - 9 employeesLaguna Niguel, CADigital Strategy and SEO company OSI Local was founded in 2008. Based in Laguna Niguel, California, the team provides Digital Strategy and Search Engine Optimization.Read More
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2218Undisclosed2 - 9 employeesLivermore, CANetwork Software Services is a software development company. Their team is located in Livermore, California and offers Custom Software Development and UX/UI Design.Read More
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2219Undisclosed2 - 9 employeesSan Francisco, CASEO company and social media marketing company Built To Scale provides Search Engine Optimization and Social Media Marketing. They are headquartered in San Francisco, California.Read More
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2220Undisclosed2 - 9 employeesSimi Valley, CAHeadquartered in Simi Valley, California, New Incite is a Marketing Strategy and SEO company. The team offers Marketing Strategy and Search Engine Optimization.Read More
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