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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451$1,000+10 - 49 employeesLos Angeles, CAThe SEO Los Angeles is a SEO services firm. They specialize in Search Engine Optimization and Pay Per Click and were established in 2010.Read More
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452$1,000+10 - 49 employeesLos Angeles, CAEstablished in 2011, ROOK SEO is a SEO company. The team offers Search Engine Optimization and Conversion Optimization.Read More
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453Undisclosed10 - 49 employeesEncinitas, CAZDigital is a SEO company and web design agency. They were launched in 2019, and their services include Search Engine Optimization and Web Design.Read More
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454$10,000+250 - 999 employeesSan Diego, CAIn San Diego, California, Readersmagnet is a SEO services firm. The team provides Search Engine Optimization and Digital Strategy.Read More
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455$1,000+50 - 249 employeesIrvine, CALead Advisors is a SEO agency. The midsize Irvine, California-based team specializes in Search Engine Optimization and Content Marketing. The agency was established in 2012.Read More
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456$5,000+10 - 49 employeesCalabasas, CASmart Street Media is a SEO agency. Based in Calabasas, California and Las Vegas, Nevada, the firm was founded in 2013. Their services include Search Engine Optimization and Pay Per Click.Read More
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457$1,000+2 - 9 employeesMission Viejo, CAXentina Digital Group is a SEO company. Their small team is based in Mission Viejo, California and specializes in Search Engine Optimization and Web Design. The firm was launched in 2004.Read More
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458$1,000+2 - 9 employeesLos Angeles, CAInternetize.Me, a custom software development company, is in Los Angeles, California. They specialize in Custom Software Development and IT strategy consulting.Read More
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459Undisclosed2 - 9 employeesLos Angeles, CAUnframed Digital is a SEO company founded in 2020. Located in Denver, Colorado and Los Angeles, California, the team specializes in Search Engine Optimization and Conversion Optimization.Read More
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460Undisclosed2 - 9 employeesSan Diego, CALocal Spark Marketing is a SEO company launched in 2017. The team focuses on Search Engine Optimization and Web Design and is located in San Diego, California.Read More
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461$5,000+2 - 9 employeesYucaipa, CAHuely inc. Is a SEO company established in 2015. In Yucaipa, California, the team offers Search Engine Optimization and Web Design.Read More
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462$1,000+10 - 49 employeesIrvine, CAStratosphere is a small SEO company founded in 2012. Their team focuses on Search Engine Optimization and Web Design.Read More
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Fuller Insurance AgencyIndustries
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463$1,000+2 - 9 employeesSanta Maria, CALaunched in 2013, RP3 Productions is a small video production company. Their services include Video Production and Social Media Marketing.Read More
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Toyota Santa Maria Toyota Lompoc Toyota San Luis Obispo Kia Santa Maria -
464$1,000+250 - 999 employeesSan Diego, CAIntero Digital is a midsize SEO company founded in 1996. Their team focuses on Search Engine Optimization, Pay Per Click, Content Marketing, and Web Development. The company is in Colorado Springs, Colorado; San Diego, California; Farmington, Arizona and Columbia, Missouri.Read More
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Mizuno Freshpet MyComputerCareer ArcadiaIndustries
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465$1,000+2 - 9 employeesThousand Oaks, CALittle Opus, LLC is a SEO company launched in 2000. The firm specializes in Search Engine Optimization and Social Media Marketing.Read More
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466$5,000+10 - 49 employeesGlendale, CAEstablished in 1998, Submit Express, a small SEO agency, is located in Glendale, California. Their services include Search Engine Optimization and Content Marketing.Read More
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467$1,000+50 - 249 employeesSan Diego, CASEO services firm Einstein Medical was established in 1995. The team offers Search Engine Optimization and Web Development.Read More
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468Undisclosed250 - 999 employeesValencia, CAHeadquartered in Draper, Utah; Valencia, California and Addison, Texas, Scorpion is a branding agency. The midsize firm was established in 2001. Their team provides Branding, Digital Strategy, Search Engine Optimization, Pay Per Click, and more.Read More
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469$1,000+250 - 999 employeesLaguna Beach, CATeam4eCom is a SEO agency. Their midsize team is in Laguna Beach, California and focuses on Search Engine Optimization, Pay Per Click, Content Marketing, Ecommerce Marketing, and more. The agency was launched in 1999.Read More
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470$5,000+2 - 9 employeesLos Angeles, CALaunched in 2013, Epikta LLC is an Advertising company. Their team provides Advertising and Branding.Read More
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471$5,000+2 - 9 employeesSacramento, CALaunched in 2009, Get on the Map is a social media marketing agency and SEO agency. The team focuses on Social Media Marketing and Search Engine Optimization and is based in Sacramento, California.Read More
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472$1,000+2 - 9 employeesMonterey, CAHeadquartered in Monterey, California, PlayBig Digital is a Marketing Strategy company. Launched in 2010, the team offers Marketing Strategy and Search Engine Optimization.Read More
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473Undisclosed50 - 249 employeesOak Park, CAWordpressIntegration, an user experience agency, was launched in 2004. They offers UX/UI Design and E-Commerce Development.Read More
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474$5,000+10 - 49 employeesPlacerville, CASEO services firm NUBRAND was launched in 2008. The team provides Search Engine Optimization and Pay Per Click.Read More
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475$1,000+10 - 49 employeesOroville, CASEO agency and web design agency SEO Web was launched in 2016. The team focuses on Search Engine Optimization and Web Design.Read More
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476$1,000+10 - 49 employeesLos Angeles, CASmart SEO People is a SEO company. The team provides Search Engine Optimization and Web Development, and the firm is based in Los Angeles, California.Read More
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477$1,000+50 - 249 employeesSan Diego, CADigital Authority Partners is a Chicago, Illinois-based SEO company. They provide Search Engine Optimization, Marketing Strategy, and Pay Per Click and were launched in 2016.Read More
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Omron HealthcareIndustries
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478$1,000+2 - 9 employeesSan Francisco, CAConversion Optimization company Startercode was launched in 2022. The small team provides Conversion Optimization and Search Engine Optimization.Read More
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479$1,000+10 - 49 employeesSan Diego, CARead More
ClickCallSell, a business consulting company, is located in San Diego, California. Founded in 2018, the small team specializes in business consulting, web development, pay per click, and web design.
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480$1,000+2 - 9 employeesPleasanton, CAGolden Gate SEO is a SEO services firm based in Pleasanton, California and. The team focuses on Search Engine Optimization and Social Media Marketing.Read More
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