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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2341Undisclosed2 - 9 employeesLancaster, CAEstablished in 1991, JR'S Handling is an Email Marketing company. Their team offers Email Marketing and Direct Marketing.Read More
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2342Undisclosed2 - 9 employeesAlhambra, CAEstablished in 2014, Cascadia Capital Corporations is an IT managed services company. The team specializes in IT managed services and Business Consulting.Read More
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2343Undisclosed2 - 9 employeesIrvine, CAMoxie Marketing Agency is a Content Marketing company. They specialize in Content Marketing and Email Marketing and are based in Irvine, California.Read More
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2344Undisclosed2 - 9 employeesAnaheim, CAApp development firm MediaOne Digital Studios provides Mobile App Development and Web Design. They are located in Anaheim, California.Read More
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2345Undisclosed2 - 9 employeesSan Clemente, CAComtek Website Design is a mobile application development company. Their team is in San Clemente, California and offers Mobile App Development and Web Design.Read More
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2346Undisclosed2 - 9 employeesIrvine, CATekLMC is a small e-commerce development firm in Irvine, California. The team focuses on E-Commerce Development and Web Design.Read More
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2347Undisclosed2 - 9 employeesLong Beach, CAImperial Digital Marketing, a Content Marketing company, is located in Long Beach, California. Their services include Content Marketing and Social Media Marketing.Read More
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2348Undisclosed2 - 9 employeesCerritos, CANirmiti Inc. Is a SEO services firm. Launched in 2001, the team focuses on Search Engine Optimization and Web Design.Read More
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2349$1,000+2 - 9 employeesSan Diego, CARead More
Excl Networks, a web design company, is located in San Diego, California. The small company was founded in 2016. Their team specializes in web design, web development, custom software development, advertising, and more.
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2350Undisclosed2 - 9 employeesRiverside, CAAdvertising company NV Media specializes in Advertising and Web Design. They were founded in 2016.Read More
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2351Undisclosed2 - 9 employeesSan Diego, CAMediascape Advertising, a small Advertising company, is in San Diego, California. Their services include Advertising and Branding.Read More
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2352Undisclosed2 - 9 employeesSan Marcos, CAELocal Web Solutions is a social media marketing firm. Launched in 2012, the agency is based in San Marcos, California. Their services include Social Media Marketing and Content Marketing.Read More
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2353Undisclosed2 - 9 employeesLincoln, CALaunched in 2011, Adrian Agency is a small branding agency. Their services include Branding and Marketing Strategy.Read More
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2354Undisclosed2 - 9 employeesSan Francisco, CALocated in San Francisco, California, SyCo Media Inc. Is a small social media marketing company. Their services include Social Media Marketing and Email Marketing.Read More
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2355Undisclosed2 - 9 employeesFremont, CAGlobal Search Council is a small branding firm founded in 2017. Their services include Branding and Social Media Marketing.Read More
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2356Undisclosed2 - 9 employeesHuntington Beach, CAExclusive Business Marketing is a Huntington Beach, California-based Advertising company. Their services include Advertising and Social Media Marketing.Read More
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2357Undisclosed2 - 9 employeesLos Angeles, CALaunched in 2020, Unframed Digital is a branding company. The small team provides Branding and Market Research.Read More
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2358Undisclosed2 - 9 employeesDublin, CALocated in Dublin, California, SimpleeLabs Inc is a social media marketing company. Their services include Social Media Marketing and Content Marketing.Read More
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2359Undisclosed2 - 9 employeesMalibu, CABranding firm The Business Agency is located in Malibu, California. They offer Branding and Social Media Marketing.Read More
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2360Undisclosed2 - 9 employeesLos Angeles, CASocializeLA.com is a Fractional CMO Services company. The company is headquartered in Los Angeles, California. Their team specializes in Fractional CMO Services and Marketing Strategy.Read More
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2361Undisclosed2 - 9 employeesSan Diego, CAHytes Productions is a Marketing Strategy company. Their team is located in San Diego, California and specializes in Marketing Strategy and Fractional CMO Services.Read More
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2362Undisclosed2 - 9 employeesEl Cajon, CASmall branding firm Your Essential Techs, is located in El Cajon, California. The team specializes in Branding and Social Media Marketing.Read More
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2363Undisclosed2 - 9 employeesSan Jose, CADemandgen Consultant LLC, a Fractional CMO Services company, is headquartered in San Jose, California. They specialize in Fractional CMO Services and Social Media Marketing and were launched in 2022.Read More
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2364Undisclosed2 - 9 employeesLos Angeles, CASimply Branded is a Fractional CMO Services company launched in 2016. The agency offers Fractional CMO Services and Branding.Read More
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2365Undisclosed2 - 9 employeesLos Angeles, CAGreenlit Agency is a branding firm. They specialize in Branding and Market Research and were established in 2017.Read More
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2366Undisclosed2 - 9 employeesChula Vista, CAGutierrez Brand Group, LLC is a branding firm. Launched in 2010, the firm focuses on Branding and Market Research.Read More
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2367Undisclosed2 - 9 employeesLathrop, CAEstablished in 2008, Synergetic Web Group is a small web design agency in Lathrop, California. Their team provides Web Design and Web Development.Read More
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2368Undisclosed2 - 9 employeesPalo Alto, CANo Diamonds Web Services, a Marketing Strategy company, is based in Palo Alto, California. They specialize in Marketing Strategy and Social Media Marketing and were established in 2001.Read More
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2369Undisclosed2 - 9 employeesSan Diego, CADigital Hype Media, an Email Marketing company, is located in San Diego, California. They focus on Email Marketing and Video Production and were founded in 2020.Read More
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2370Undisclosed2 - 9 employeesSan Francisco, CACodepilot, Inc. Is a web design company launched in 2017. Their services include Web Design and Web Development.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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