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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1771$5,000+2 - 9 employeesSan Jose, CARobert Nicholson Consulting is a social media marketing agency. Launched in 2016, the company specializes in Social Media Marketing and Search Engine Optimization.Read More
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1772UndisclosedFreelancer employeesClovis, CAAshmith.com is a web design company. The team focuses on Web Design and Search Engine Optimization, and the company is based in Clovis, California.Read More
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1773$5,000+250 - 999 employeesLos Angeles, CATeam One is a Digital Strategy company. Established in 1987, the team offers Digital Strategy and Advertising.Read More
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The Ritz CarltonIndustries
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1774Undisclosed250 - 999 employeesSan Francisco, CADemandbase, a branding firm, is headquartered in San Francisco, California and St Albans, England. They focus on Branding and Marketing Strategy.Read More
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1775UndisclosedFreelancer employeesSanta Monica, CAGlorious Concepts LLC is a small SEO services firm in Santa Monica, California. Their services include Search Engine Optimization and Web Design.Read More
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1776$5,000+2 - 9 employeesLos Angeles, CASEO Services LA is a small Los Angeles, California-based SEO company. Their services include Search Engine Optimization and Web Design.Read More
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1777Undisclosed50 - 249 employeesLos Angeles, CAJWT INSIDE is an user experience design company established in 1949. The company offers UX/UI Design and Branding.Read More
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1778UndisclosedFreelancer employeesStockton, CAMarquis Trail Marketing is a Stockton, California-based SEO services firm. Established in 2016, the team provides Search Engine Optimization.Read More
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1779Undisclosed50 - 249 employeesCosta Mesa, CASEO services firm and social media marketing company 247.inc is in Costa Mesa, California. They focus on Search Engine Optimization and Social Media Marketing.Read More
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1780Undisclosed50 - 249 employeesRoseville, CAFounded in 2006, OnSumaye Web Solutions is a Marketing Strategy and SEO services firm. The team focuses on Marketing Strategy and Search Engine Optimization.Read More
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1781Undisclosed50 - 249 employeesBrea, CAIntact Info, a midsize public relations firm, is based in Brea, California. Their services include Public Relations and Social Media Marketing.Read More
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1782Undisclosed50 - 249 employeesSunnyvale, CABaidu USA is an artificial intelligence firm. The Sunnyvale, California-based company was founded in 2014. Their team specializes in Artificial Intelligence and Advertising.Read More
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1783$5,000+2 - 9 employeesLos Angeles, CAGobiya Agency is an Advertising company. They are based in Los Angeles, California, and their services include Advertising and Branding.Read More
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1784$5,000+2 - 9 employeesSan Jose, CAKat & Mouse Co. Is a Conversion Optimization company established in 1995. The small team specializes in Conversion Optimization and Pay Per Click.Read More
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1785Undisclosed2 - 9 employeesSeal Beach, CABoulevard Digital Marketing, Inc. Is an Email Marketing company. Located in Seal Beach, California, the agency provides Email Marketing and Pay Per Click.Read More
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1786Undisclosed2 - 9 employeesRancho Cucamonga, CAGraphic design agency Websites Makeover is headquartered in Rancho Cucamonga, California. Founded in 2010, the team provides Graphic Design and Logo.Read More
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1787Undisclosed2 - 9 employeesLos Angeles, CALogo company Ad Inicio Digital is based in Los Angeles, California. They specialize in Logo and Other Digital Marketing.Read More
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1788$5,000+2 - 9 employeesSan Francisco, CABay Laurel Solutions is a website development company headquartered in San Francisco, California. They provide Web Development and Search Engine Optimization and were launched in 2023.Read More
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1789$5,000+2 - 9 employeesPalm Springs, CAOpen Lines Marketing, a Digital Strategy company, was founded in 2015. The team focuses on Digital Strategy and Content Marketing and is headquartered in Palm Springs, California.Read More
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1790$5,000+10 - 49 employeesMurrieta, CAEstablished in 1998, Premazon is a small Marketing Strategy company. Their team specializes in Marketing Strategy and Search Engine Optimization.Read More
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1791Undisclosed10 - 49 employeesLos Angeles, CASkylite Web, a small PPC company, is based in Los Angeles, California. Their services include Pay Per Click and Search Engine Optimization.Read More
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1792Undisclosed50 - 249 employeesSanta Clara, CAWebCaptive Inc is a Santa Clara, California-based SEO company. The team provides Search Engine Optimization and Social Media Marketing.Read More
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1793$5,000+2 - 9 employeesLos Angeles, CALaunched in 2010, Luko Designs is a small branding firm. Their services include Branding and Digital Strategy.Read More
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1794$5,000+2 - 9 employeesAlameda, CAC3i3 Interactive is a web design company established in 2002. Located in Alameda, California, the team specializes in Web Design and Search Engine Optimization.Read More
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1795$5,000+2 - 9 employeesSan Mateo, CAPureLynx is a Content Marketing company launched in 2011. The team offers Content Marketing and E-Commerce Development and is located in San Mateo, California.Read More
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1796$1,000+2 - 9 employeesFolsom, CAChampion Online Marketing is a small social media marketing agency founded in 2011. Their team provides Social Media Marketing and Search Engine Optimization.Read More
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1797$25,000+2 - 9 employeesOakland, CACH Web Media is a graphic design company. Established in 2010, the team provides Graphic Design and Search Engine Optimization.Read More
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1798$1,000+2 - 9 employeesAuburn, CABear River Web Design is a graphic design agency. Their small team of employees is based in Auburn, California. Their team focuses on Graphic Design and Public Relations.Read More
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1799$5,000+10 - 49 employeesLos Angeles, CATriodash™ Agency is a web design agency. Based in Gresham, Oregon and Newburgh, New York, the team provides Web Design and UX/UI Design.Read More
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1800$1,000+2 - 9 employeesIrvine, CABreakaway Dezigns Agency, a Marketing Strategy company, is in Irvine, California. Their services include Marketing Strategy and Search Engine Optimization.Read More
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