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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1741$1,000+50 - 249 employeesSan Jose, CAAutus Digital Agency is a SEO agency. Their midsize team is in San Jose, California; Toronto, Canada and Bothell, Washington. The company focuses on Search Engine Optimization, Social Media Marketing, Web Design, and Web Development.Read More
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1742$1,000+50 - 249 employeesTustin, CAMidsize Digital Strategy company GMR Web Team, is based in Tustin, California and Patna, India. Their services include Digital Strategy and Social Media Marketing.Read More
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1743$1,000+2 - 9 employeesVista, CANext Level Web is a SEO agency founded in 2010. The agency focuses on Search Engine Optimization and Web Design, and is small.Read More
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1744Undisclosed50 - 249 employeesSan Jose, CABaytech Digital is a midsize Email Marketing company established in 2001. Their services include Email Marketing and Search Engine Optimization.Read More
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1745Undisclosed2 - 9 employeesMarina del Rey, CAInterCore Technologies is a small Marina del Rey, California-based SEO agency. They focus on Search Engine Optimization, Pay Per Click, Web Design, Web Development, and more and were established in 2002.Read More
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1746$75,000+10 - 49 employeesCupertino, CABranding firm Reactionpower was established in 2011. The small team provides Branding and Marketing Strategy.Read More
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1747$5,000+10 - 49 employeesSan Mateo, CAPennock Digital Agency is a PPC agency. Headquartered in San Mateo, California, the company was launched in 2016. Their team specializes in Pay Per Click and Search Engine Optimization.Read More
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1748$1,000+10 - 49 employeesSanta Ana, CAVibgyorweb Technologies Pvt Ltd is a social media marketing firm established in 2020. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1749$5,000+10 - 49 employeesTracy, CABlockWoods Marketing Management is an Advertising company in Dubai, United Arab Emirates and Chennai, India. Established in 2023, the team focuses on Advertising and Branding.Read More
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1750$5,000+10 - 49 employeesFresno, CAHeadquartered in Fresno, California, Webcity Press is a Content Marketing company. Established in 1995, the team specializes in Content Marketing and Search Engine Optimization.Read More
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1751Undisclosed10 - 49 employeesLos Angeles, CAPowerSites is a Business Consulting company established in 2009. Their team provides Business Consulting and Social Media Marketing.Read More
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1752$5,000+2 - 9 employeesSacramento, CAOnPoint Internet Marketing is a pay per click agency. Founded in 2009, the company provides Pay Per Click and Search Engine Optimization.Read More
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1753$50,000+250 - 999 employeesSan Francisco, CAGyro, a web design company, was established in 1981. The agency specializes in Web Design and Digital Strategy.Read More
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1754$5,000+2 - 9 employeesSan Francisco, CALevel343, a branding company, was established in 1998. The agency focuses on Branding and Digital Strategy.Read More
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1755$5,000+2 - 9 employeesSan Francisco, CACalifornia SEO Professionals is a Content Marketing company launched in 2012. The company specializes in Content Marketing and Conversion Optimization, and is small.Read More
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1756Undisclosed2 - 9 employeesLos Angeles, CAEstablished in 2023, Pro Brain Solutions is a SEO agency. The small team offers Search Engine Optimization and IT managed services.Read More
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1757$1,000+10 - 49 employeesSan Jose, CABranding company Click Catalyst Digital Marketing Agency was launched in 2012. The team specializes in Branding and Digital Strategy and is located in San Jose, California.Read More
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1758$5,000+10 - 49 employeesSanta Clarita, CASEO agency NextClient was launched in 2000. The firm focuses on Search Engine Optimization and Web Design, and is small.Read More
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1759$1,000+2 - 9 employeesLos Angeles, CAWelby Creative is a web design agency. They were founded in 2019, and their services include Web Design and Graphic Design.Read More
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1760$1,000+2 - 9 employeesSan Diego, CADigital Strategy company Accelerate Marketing was established in 2007. Headquartered in San Diego, California, the team focuses on Digital Strategy and Email Marketing.Read More
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Empire IndustriesIndustries
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1761$5,000+2 - 9 employeesSan Jose, CAHiveMind Studios is an Advertising company. Headquartered in San Jose, California, the team focuses on Advertising and Branding.Read More
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1762Undisclosed2 - 9 employeesSanta Barbara, CAAmeravant Web Design Studio is a Digital Strategy company. The Santa Barbara, California-based firm specializes in Digital Strategy and Search Engine Optimization.Read More
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1763$5,000+Freelancer employeesOakland, CASmall branding agency and SEO agency Uncommon Growth Studio, is in Oakland, California. The team provides Branding and Search Engine Optimization.Read More
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1764$1,000+10 - 49 employeesAgoura Hills, CAEstablished in 2022, Pro Seller Marketing, a small Advertising company, is in Agoura Hills, California. Their team offers Advertising and Search Engine Optimization.Read More
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1765$1,000+2 - 9 employeesPasadena, CAL2 Digital Marketing is a SEO agency. Launched in 2019, the firm focuses on Search Engine Optimization and Web Design.Read More
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1766$1,000+10 - 49 employeesSan Francisco, CAFounded in 2013, OrganizeIn is a pay per click agency. The small team provides Pay Per Click and Search Engine Optimization.Read More
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1767$1,000+10 - 49 employeesSan Francisco, CAGetLegal is an Advertising company. Headquartered in San Francisco, California, the firm was established in 1999. Their team offers Advertising and Search Engine Optimization.Read More
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1768$1,000+10 - 49 employeesDublin, CAOpal Infotech INC is a SEO company. They are based in Dublin, California. Their team provides Search Engine Optimization and Pay Per Click.Read More
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1769$5,000+2 - 9 employeesRiverside, CAArkside Marketing, Inc. Is an Advertising company. Their small team of employees is located in Riverside, California. Their team offers Advertising and Branding.Read More
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1770Undisclosed2 - 9 employeesOrange, CAOrange Web Group, LLC, a SEO company, is in Orange, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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