Top 100 SEO Companies in California
The Best of September 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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1741Undisclosed2 - 9 employeesLivermore, CATri-Valley Internet is an IT managed services company founded in 1995. The company provides IT managed services and IT strategy consulting, and is small.Read More
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1742Undisclosed2 - 9 employeesRedwood City, CACrewMachine is a small Redwood City, California-based artificial intelligence firm. Their services include Artificial Intelligence and CRM consulting and SI.Read More
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1743Undisclosed2 - 9 employeesChico, CADiverse Network Associates, Inc., an e-commerce development firm, is headquartered in Chico, California. The team focuses on E-Commerce Development and Search Engine Optimization.Read More
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1744Undisclosed2 - 9 employeesBrentwood, CAWeblative is a small Content Marketing company in Brentwood, California. Their services include Content Marketing and Search Engine Optimization.Read More
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1745Undisclosed2 - 9 employeesSan Diego, CAElixir Connect is a SEO services firm. They are based in San Diego, California and have small team. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1746Undisclosed2 - 9 employeesSan Francisco, CAUnderstanding eCommerce is a social media marketing firm launched in 2003. The team specializes in Social Media Marketing and Content Marketing.Read More
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1747Undisclosed2 - 9 employeesTemecula, CACustom-brewed-content-marketing is a social media marketing firm launched in 2001. The agency focuses on Social Media Marketing and Search Engine Optimization, and is small.Read More
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1748Undisclosed2 - 9 employeesSan Jose, CASEO services firm Zexler was established in 2013. The firm focuses on Search Engine Optimization and Pay Per Click, and is small.Read More
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1749Undisclosed2 - 9 employeesLos Angeles, CAIn Los Angeles, California, Reaction Concepts LLC is a small social media marketing company. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1750Undisclosed2 - 9 employeesSanta Monica, CABright Horizons Media is an Advertising company. Established in 2011, the team provides Advertising and Social Media Marketing.Read More
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1751Undisclosed2 - 9 employeesSanta Monica, CASeo Company Santa Monica is a small social media marketing firm launched in 2007. Their team offers Social Media Marketing and Search Engine Optimization.Read More
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1752Undisclosed2 - 9 employeesFolsom, CASmall e-commerce development company Web eCommerce Developer, is located in Folsom, California. The team provides E-Commerce Development and Search Engine Optimization.Read More
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1753Undisclosed2 - 9 employeesSanta Maria, CAEconcept Inc is a social media marketing firm in Santa Maria, California. The team focuses on Social Media Marketing and Search Engine Optimization.Read More
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1754$5,000+2 - 9 employeesRiverside, CASevilla Local Media, a mobile application development company, was established in 2010. The team focuses on Mobile App Development and Social Media Marketing.Read More
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1755$1,000+2 - 9 employeesSan Diego, CAGolden Life Consulting is a SEO company launched in 2025. The agency specializes in Search Engine Optimization, Web Development, Web Design, and Digital Strategy and has a small team. The agency is based in San Diego, California.Read More
Clients
Interium Cabinets Constant Appliance Service Vivital, Inc.Industries
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1756Undisclosed2 - 9 employeesOakland, CALocated in Oakland, California, Doc4Website is a SEO services firm. Their services include Search Engine Optimization and Web Design.Read More
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1757Undisclosed2 - 9 employeesGardena, CADigital Twenty47, a SEO company, was launched in 2020. The small team provides Search Engine Optimization and Content Marketing.Read More
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1758$5,000+2 - 9 employeesLos Angeles, CASEO Direct is a Marketing Strategy company founded in 2010. Their team focuses on Marketing Strategy and Search Engine Optimization.Read More
Industries
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1759$1,000+Freelancer employeesJamestown, CAPurposeful Marketing - Web Design, SEO, Social Media Advertising, San Francisco, Sacramento, Modesto, Central Valley Company is a SEO company. Their team focuses on Search Engine Optimization.Read More
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1760$1,000+10 - 49 employeesSan Diego, CARead More
Out of Business - Astash Web Design and Marketing is a branding agency founded in 2018. Their small team is located in Denver, Colorado; Fort Collins, Colorado; San Diego, California and Las Vegas, Nevada and specializes in Branding, Social Media Marketing, Search Engine Optimization, Pay Per Click, and more.
Industries
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1761$1,000+2 - 9 employeesLos Angeles, CAAIEO is an AI Consulting company. They are based in Winnipeg, Canada and Los Angeles, California and have small team of experts. Their services include AI Consulting and Generative AI.Read More
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1762$1,000+10 - 49 employeesSan Francisco, CABased in Kyiv, Ukraine; New York, New York; London, England and Toronto, Canada, RGray is a Blockchain Marketing company. They specialize in Blockchain Marketing and Search Engine Optimization and were founded in 2019.Read More
Clients
BitQuantIndustries
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1763Undisclosed2 - 9 employeesInglewood, CADopWeb is a SEO agency. The team is located in Inglewood, California, and their services include Search Engine Optimization and Digital Strategy.Read More
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1764Undisclosed2 - 9 employeesWhittier, CAWeb design agency Grafix Box was established in 2010. The small team provides Web Design and E-Commerce Development.Read More
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1765$1,000+10 - 49 employeesSan Francisco, CARanxy is a PPC agency established in 2023. Their small team is located in San Francisco, California. Their services include Pay Per Click, Social Media Marketing, Search Engine Optimization, and Advertising.Read More
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1766$5,000+10 - 49 employeesEl Segundo, CAApollo Interactive, a Content Marketing company, was established in 1995. The team specializes in Content Marketing and Email Marketing.Read More
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1767$1,000+10 - 49 employeesLos Angeles, CAHeadquartered in Los Angeles, California, Syndctd is a Content Marketing company. The team offers Content Marketing and Mobile & App Marketing.Read More
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1768$5,000+10 - 49 employeesLa Mesa, CAZD Design Agency is a social media marketing agency. Founded in 2004, their team offers Social Media Marketing and Digital Strategy.Read More
Clients
Rock N Gold CreationsIndustries
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1769$5,000+10 - 49 employeesCompton, CATräfika, a Mobile & App Marketing company, was established in 2009. Located in Compton, California and Benito Juárez, Mexico, the team provides Mobile & App Marketing and Search Engine Optimization.Read More
Industries
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1770$5,000+10 - 49 employeesSan Diego, CATaylor & Pond Interactive is an Advertising company. They were established in 1995, and their services include Advertising and Branding.Read More
Industries
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Check out a SEO Company in California with the most new reviews in the past 12 months.
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