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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1861Undisclosed10 - 49 employeesSan Francisco, CABased in San Francisco, California, Optimal is a website development firm. Established in 2015, the team focuses on Web Development and Application Testing.Read More
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1862Undisclosed10 - 49 employeesBeverly Hills, CAMedia planning & buying company Admediary LLC was founded in 2013. The company offers Media Planning & Buying and Social Media Marketing.Read More
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1863Undisclosed10 - 49 employeesRohnert Park, CABay Area Digital Solutions, an Advertising company, was launched in 2016. The agency provides Advertising and Social Media Marketing, and is small.Read More
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1864Undisclosed10 - 49 employeesLos Angeles, CAAloola.io is a PPC agency. Established in 2019, the agency is located in Los Angeles, California. Their team focuses on Pay Per Click and Search Engine Optimization.Read More
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1865Undisclosed10 - 49 employeesUnion City, CADigital Halt Technologies is an Union City, California-based social media marketing agency. They provide Social Media Marketing and Email Marketing.Read More
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1866Undisclosed10 - 49 employeesLong Beach, CALaunched in 2020, Upmax Digital Marketing Agency is a small Long Beach, California-based social media marketing firm. Their team specializes in Social Media Marketing and Conversion Optimization.Read More
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1867Undisclosed10 - 49 employeesSanta Monica, CALos Angeles WordPress Development is a web design company. Located in Santa Monica, California, the team focuses on Web Design and Search Engine Optimization.Read More
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1868Undisclosed10 - 49 employeesIrvine, CALocal SEO Sites is a social media marketing firm. Founded in 2010, the firm is located in Irvine, California. Their team offers Social Media Marketing and Search Engine Optimization.Read More
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1869Undisclosed10 - 49 employeesMission Viejo, CASmall e-commerce development company Your Store Wizards, is based in Mission Viejo, California. Their services include E-Commerce Development and Web Design.Read More
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1870Undisclosed10 - 49 employeesSan Juan Capistrano, CAWeb design agency iSearch By City was founded in 2010. The company focuses on Web Design and Social Media Marketing, and is small.Read More
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1871Undisclosed10 - 49 employeesPomona, CABigfork SEO is a SEO services firm. Their small team is located in Pomona, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1872Undisclosed10 - 49 employeesEl Segundo, CASEO company InterEcho is based in El Segundo, California. They focus on Search Engine Optimization and Video Production and were launched in 2017.Read More
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1873Undisclosed10 - 49 employeesIrvine, CALocated in Irvine, California, eGumball Inc. Is a small SEO services firm. The team focuses on Search Engine Optimization and Print Design.Read More
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1874Undisclosed10 - 49 employeesSan Rafael, CAActive Ingredients is a San Rafael, California-based branding firm. Founded in 2004, the team provides Branding and Social Media Marketing.Read More
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1875Undisclosed10 - 49 employeesSan Clemente, CAPactx, Inc is an Email Marketing company. The San Clemente, California-based firm specializes in Email Marketing and Conversion Optimization.Read More
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1876Undisclosed2 - 9 employeesCulver City, CAPay per click agency z is headquartered in Culver City, California. They focus on Pay Per Click and Search Engine Optimization and were established in 2024.Read More
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1877$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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1878Undisclosed2 - 9 employeesLake Forest, CAWebbROI is a pay per click agency. Their small team of employees is headquartered in Lake Forest, California. Their team focuses on Pay Per Click and Search Engine Optimization.Read More
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1879$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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1880Undisclosed50 - 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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1881Undisclosed2 - 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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1882$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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1883$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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1884$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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1885$1,000+2 - 9 employeesTehachapi, CAFounded in 2008, PointClick is a small PPC agency in Tehachapi, California. Their team offers Pay Per Click and Search Engine Optimization.Read More
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1886$5,000+10 - 49 employeesSan Francisco, CAUxSquare is a branding agency. The small New Delhi, India-based team provides Branding and Social Media Marketing. The firm was established in 2020.Read More
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1887$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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1888$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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1889Undisclosed10 - 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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1890$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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Check out a SEO Company in California with the most new reviews in the past 12 months.
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