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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601$5,000+50 - 249 employeesNewark, CAWebsite Developer LLC is a Content Marketing company. They are in Newark, California. Their team provides Content Marketing and Search Engine Optimization.Read More
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602$1,000+2 - 9 employeesIrvine, CAVulcan Media Group is a PPC agency. Their small team is in Irvine, California. Their services include Pay Per Click and Search Engine Optimization.Read More
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603$5,000+10 - 49 employeesNewcastle, CASEO company Decrypt SEO is headquartered in Newcastle, California. The team provides Search Engine Optimization and Advertising.Read More
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604Undisclosed10 - 49 employeesSan Francisco, CASEO Gremlin is a SEO agency. Their small team of employees is in San Francisco, California. Their team focuses on Search Engine Optimization and Branding.Read More
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605Undisclosed10 - 49 employeesLos Angeles, CAEstablished in 2025, TechTribeMag is a small SEO agency in Los Angeles, California. Their team specializes in Search Engine Optimization and Content Marketing.Read More
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606Undisclosed2 - 9 employeesLancaster, CASEO Done Right is a SEO company. Their small team of employees is based in Lancaster, California. Their team provides Search Engine Optimization.Read More
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607Undisclosed50 - 249 employeesSan Diego, CAZ57, Inc. Is a SEO services firm. The San Diego, California-based company provides Search Engine Optimization.Read More
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608Undisclosed10 - 49 employeesDaly City, CALaunched in 2010, eZ-Xpo is a small SEO company. Their services include Search Engine Optimization.Read More
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609Undisclosed2 - 9 employeesSan Diego, CA#1 SEO is a SEO company. They were established in 2012, and their services include Search Engine Optimization.Read More
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610Undisclosed2 - 9 employeesSan Diego, CAAffordable SEO is a San Diego, California-based SEO services firm. Their services include Search Engine Optimization.Read More
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611Undisclosed2 - 9 employeesLos Angeles, CASEO For Local is a SEO company established in 2014. Their services include Search Engine Optimization.Read More
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612Undisclosed10 - 49 employeesIrvine, CABudgetSEO is a SEO company. Their team is located in Richmond, Australia and Irvine, California and focuses on Search Engine Optimization.Read More
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613Undisclosed10 - 49 employeesLos Angeles, CAGetmilk is a SEO agency based in New York, New York and Chicago, Illinois. Their services include Search Engine Optimization.Read More
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614Undisclosed250 - 999 employeesSan Mateo, CABrightEdge is a SEO company. Launched in 2007, the firm is in San Mateo, California. Their team provides Search Engine Optimization and Content Marketing.Read More
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615Undisclosed2 - 9 employeesLos Angeles, CASmall Business SEO Company is a SEO agency established in 2021. Headquartered in Los Angeles, California, the team specializes in Search Engine Optimization.Read More
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616$25,000+10 - 49 employeesLos Angeles, CASEO services firm 4D Marketing & Business Solutions Firm World-wide Hosting was founded in 2007. The small team focuses on Search Engine Optimization and Email Marketing.Read More
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617$5,000+10 - 49 employeesLos Angeles, CADigital Delane is a website development firm located in Los Angeles, California. They provide Web Development and Branding.Read More
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Higher Education Entertainment Industry Travel Industry CPGIndustries
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618$1,000+50 - 249 employeesSan Diego, CARead More
Creative Design Crew is a midsize logo company. They specialize in logo, web design, social media marketing, search engine optimization, and more and were founded in 2010. The agency is located in San Diego, California.
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619$1,000+2 - 9 employeesSanta Rosa, CACurrier Marketing is a SEO company established in 2010. The team focuses on Search Engine Optimization and Pay Per Click and is headquartered in Santa Rosa, California.Read More
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620$1,000+10 - 49 employeesSan Diego, CAExplore Digital is a SEO company. Their team is headquartered in San Diego, California and specializes in Search Engine Optimization and Pay Per Click.Read More
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621$1,000+10 - 49 employeesLos Angeles, CAWeb Design and Development Company USA & India - SAMTAA Software is a web design agency. Founded in 2013, their team provides Web Design and Web Development.Read More
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622$1,000+50 - 249 employeesSan Jose, CAStartup company counsel, a SEO services firm, was founded in 2014. They specializes in Search Engine Optimization and Social Media Marketing.Read More
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623Undisclosed2 - 9 employeesGlendale, CALaunched in 2021, Freeform PR & Branding is a PR company. The team specializes in Public Relations and Social Media Marketing.Read More
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624$1,000+2 - 9 employeesSacramento, CASEO services firm Ardent Prime Innovations LLC was established in 2025. The small team offers Search Engine Optimization and Web Design.Read More
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625Undisclosed10 - 49 employeesSan Francisco, CAZoopero is a PPC agency. The small London, England-based team specializes in Pay Per Click and Social Media Marketing. The company was launched in 2016.Read More
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TrueeditorsIndustries
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626$100,000+2 - 9 employeesTustin, CAFounded in 2015, Vembar LLC is a SEO services firm. The team specializes in Search Engine Optimization and Marketing Strategy.Read More
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627$1,000+2 - 9 employeesLa Mesa, CALocated in La Mesa, California, All Systems Go Marketing is a small SEO company. Their services include Search Engine Optimization and Pay Per Click.Read More
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628$1,000+10 - 49 employeesTorrance, CATechievolve Inc., a small Content Marketing company, is based in Torrance, California. Their services include Content Marketing and Mobile App Development.Read More
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629Undisclosed10 - 49 employeesLos Angeles, CAVantedge Studios is a branding firm established in 2016. Based in Los Angeles, California, their small team provides branding, social media marketing, search engine optimization, mobile app development, and more.Read More
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630$5,000+50 - 249 employeesLos Angeles, CAAdvertising company Troika is headquartered in Los Angeles, California. Established in 2001, the team focuses on Advertising and Branding.Read More
Industries
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