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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2131$1,000+Freelancer employeesSan Diego, CAGibbard Web Design is a website development firm. Established in 2006, the firm is located in San Diego, California. Their team provides Web Development and Branding.Read More
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2132$1,000+2 - 9 employeesSan Jose, CAMagnate Marketing Agency is a small San Jose, California-based Advertising company. The team specializes in Advertising and Branding.Read More
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2133$10,000+2 - 9 employeesSan Francisco, CASmall Marketing Strategy company Spice Marketing, is headquartered in San Francisco, California. Their services include Marketing Strategy and Branding.Read More
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2134$1,000+2 - 9 employeesSan Mateo, CAMagpie Child Care Digital Marketing, a Digital Strategy company, is headquartered in San Mateo, California. Their services include Digital Strategy and Marketing Strategy.Read More
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2135UndisclosedFreelancer employeesFremont, CAContent Marketing company Freelancer was established in 2022. The firm specializes in Content Marketing and Search Engine Optimization, and is small.Read More
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2136UndisclosedFreelancer employeesRiverbank, CAWebdul, a web design company, is in Riverbank, California. The team provides Web Design and Web Development.Read More
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2137UndisclosedFreelancer employeesIrvine, CAFounded in 2023, Metis Digital is a small SEO agency. Their team offers Search Engine Optimization and Social Media Marketing.Read More
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2138Undisclosed50 - 249 employeesFresno, CADesignix LLC is a Fresno, California-based social media marketing firm. The team offers Social Media Marketing and Search Engine Optimization.Read More
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2139UndisclosedFreelancer employeesLos Angeles, CALos Angeles Web Designs, a small web design agency, is in Los Angeles, California. Their services include Web Design and Search Engine Optimization.Read More
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2140$25,000+Freelancer employeesWest Hollywood, CAGothic Moon Creative Studio LLC is a SEO agency. The agency is headquartered in West Hollywood, California. Their team specializes in Search Engine Optimization and Web Design.Read More
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2141UndisclosedFreelancer employeesSan Diego, CABest Sandiego Web Design Company, a social media marketing company, was established in 2024. The company focuses on Social Media Marketing and Search Engine Optimization.Read More
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2142$1,000+Freelancer employeesGardena, CA10xDev is a SEO services firm. Established in 2025, the agency focuses on Search Engine Optimization and Web Design.Read More
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2143$1,000+50 - 249 employeesSan Francisco, CALaunched in 2013, Alsett Advertising & Printing is an Advertising company. Headquartered in Las Vegas, Nevada and Las Vegas, Nevada, the team offers Advertising and Market Research.Read More
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2144$100,000+250 - 999 employeesOakland, CALQ Digital, a SEO services firm, offer Search Engine Optimization and Social Media Marketing. They were established in 2006.Read More
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2145$5,000+2 - 9 employeesSan Diego, CAEstablished in 1987, Visual Asylum is an Advertising company. The firm focuses on Advertising and Branding.Read More
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2146$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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2147$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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2148$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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2149Undisclosed2 - 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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2150Undisclosed2 - 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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2151Undisclosed2 - 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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2152Undisclosed2 - 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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2153Undisclosed2 - 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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2154Undisclosed2 - 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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2155Undisclosed2 - 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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2156Undisclosed2 - 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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2157Undisclosed2 - 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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2158Undisclosed2 - 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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2159Undisclosed2 - 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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2160Undisclosed2 - 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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