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
Industries
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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
Industries
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1921Undisclosed2 - 9 employeesIrvine, CADharne & Co. Is an Email Marketing company based in Irvine, California. The team offers Email Marketing and Search Engine Optimization.Read More
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1922Undisclosed2 - 9 employeesAlamo, CAResult Driven Design, a small Content Marketing company, is based in Alamo, California. Their services include Content Marketing and Pay Per Click.Read More
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1923Undisclosed2 - 9 employeesDanville, CAEWebsiteServices is a SEO agency. Their small team is in Danville, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1924Undisclosed2 - 9 employeesDanville, CASina Advisory Group, an e-commerce development firm, was established in 2008. The small team specializes in E-Commerce Development and Search Engine Optimization.Read More
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1925Undisclosed2 - 9 employeesSan Ramon, CAD-Kode Technology, a web design company, offers Web Design and Web Development. The agency is based in San Ramon, California.Read More
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1926Undisclosed2 - 9 employeesBrentwood, CADesignLoyal is a web design agency. They were launched in 2012 and provide Web Design and Web Development.Read More
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1927Undisclosed2 - 9 employeesPittsburg, CAEstablished in 2010, BVO Digital Marketing, a small video production company, is based in Pittsburg, California. Their services include Video Production and Search Engine Optimization.Read More
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1928Undisclosed2 - 9 employeesPittsburg, CANewtec Web Studio, a small graphic design agency, is headquartered in Pittsburg, California. The team specializes in Graphic Design and Search Engine Optimization.Read More
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1929Undisclosed2 - 9 employeesWalnut Creek, CAHeadquartered in Walnut Creek, California, APC Digital Media is a small IT managed services company. The team offers IT managed services and Search Engine Optimization.Read More
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1930Undisclosed2 - 9 employeesDanville, CAGlobalTown Marketing, a Content Marketing company, focus on Content Marketing and Search Engine Optimization. They were launched in 2014.Read More
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1931Undisclosed2 - 9 employeesDanville, CASmallbox Media Group is a branding company. Based in Danville, California, the team focuses on Branding and Graphic Design.Read More
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1932Undisclosed2 - 9 employeesSan Ramon, CALocated in San Ramon, California, TopMind PR is a small public relations firm. Their services include Public Relations and Search Engine Optimization.Read More
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1933Undisclosed2 - 9 employeesCastro Valley, CAFinalTouch Digital Marketing is an Advertising company. The Castro Valley, California-based agency provides Advertising and Marketing Strategy.Read More
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1934Undisclosed2 - 9 employeesSan Leandro, CAIgnitor Marketing is an Email Marketing company. The San Leandro, California-based company was founded in 2014. Their team specializes in Email Marketing and Pay Per Click.Read More
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1935Undisclosed2 - 9 employeesSonora, CALevel One Web Design is a graphic design agency launched in 2011. The team focuses on Graphic Design and Search Engine Optimization.Read More
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1936Undisclosed2 - 9 employeesSan Luis Obispo, CALaunched in 2007, Jayne Wayne Web Design and Branding is a SEO company. The firm offers Search Engine Optimization and Web Design.Read More
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1937Undisclosed2 - 9 employeesGilroy, CAGIlroyWebDesign is a pay per click company. Located in Gilroy, California, the agency was launched in 2015. Their services include Pay Per Click and Search Engine Optimization.Read More
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1938Undisclosed2 - 9 employeesBrea, CABig Chief Creative Media is a branding company established in 2008. The firm offers Branding and Search Engine Optimization, and is small.Read More
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1939Undisclosed2 - 9 employeesClovis, CACityline Websites is a graphic design agency located in Clovis, California. Their services include Graphic Design and Search Engine Optimization.Read More
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1940Undisclosed2 - 9 employeesBakersfield, CAGinomai Creative is a graphic design company in Bakersfield, California. Their services include Graphic Design and Logo.Read More
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1941Undisclosed2 - 9 employeesSan Juan Bautista, CAHeadquartered in San Juan Bautista, California, Webstrim Design Group is an e-commerce development company. They provide E-Commerce Development and Email Marketing and were founded in 2004.Read More
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1942Undisclosed2 - 9 employeesLos Angeles, CAUX design company HammockWeb is based in Los Angeles, California. They provide UX/UI Design and E-Commerce Development.Read More
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1943Undisclosed2 - 9 employeesRedondo Beach, CAByer Co is a Redondo Beach, California-based branding agency. The team focuses on Branding and Search Engine Optimization.Read More
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1944Undisclosed2 - 9 employeesFountain Valley, CAFounded in 2012, Addictive Marketing Group is a small Fountain Valley, California-based Mobile & App Marketing company. Their team specializes in Mobile & App Marketing and Pay Per Click.Read More
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1945Undisclosed2 - 9 employeesIrvine, CAInk Refuge is a web design agency launched in 2008. The agency focuses on Web Design and Branding.Read More
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1946Undisclosed2 - 9 employeesCerritos, CAG2CPartners is a Content Marketing company located in Cerritos, California. They focus on Content Marketing and Pay Per Click.Read More
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1947Undisclosed2 - 9 employeesIrvine, CAPacific Internet Consulting Group, a Mobile & App Marketing company, was established in 2004. The team focuses on Mobile & App Marketing and Pay Per Click.Read More
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1948Undisclosed2 - 9 employeesSanta Ana, CAIn Santa Ana, California, Revho Ad Agency is a branding firm. Founded in 2014, the team specializes in Branding and Search Engine Optimization.Read More
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1949Undisclosed2 - 9 employeesHacienda Heights, CADigital Xchange Media is a branding agency headquartered in Hacienda Heights, California. Their services include Branding and Digital Strategy.Read More
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1950Undisclosed2 - 9 employeesSanta Ana, CASynergy Digital is a small Email Marketing company in Santa Ana, California. The team specializes in Email Marketing and Pay Per Click.Read More
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