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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2431Undisclosed2 - 9 employeesIrvine, CATalent Evolution, LLC is a small social media marketing firm headquartered in Irvine, California. Their services include Social Media Marketing and Search Engine Optimization.Read More
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2432Undisclosed2 - 9 employeesLake Forest, CAMedia Blend, a web design company, is in Lake Forest, California. The team offers Web Design and Search Engine Optimization.Read More
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2433Undisclosed2 - 9 employeesPasadena, CASEO agency WOWu Digital Marketing was founded in 2015. The company provides Search Engine Optimization and Web Design.Read More
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2434Undisclosed2 - 9 employeesOceanside, CAOliver Web Guy is a web design agency. They are in Oceanside, California and have small team. They provide Web Design and Branding.Read More
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2435Undisclosed2 - 9 employeesSimi Valley, CASJO Consulting Group is an IT managed services company. Their small team is headquartered in Simi Valley, California. Their services include IT managed services and Search Engine Optimization.Read More
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2436Undisclosed2 - 9 employeesEl Cajon, CA619 Creative is an UX company headquartered in El Cajon, California. Established in 2015, the team provides UX/UI Design and Web Design.Read More
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2437Undisclosed2 - 9 employeesModesto, CAWeb Design Just For You is a web design agency. The Modesto, California-based agency offers Web Design and Graphic Design.Read More
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2438Undisclosed2 - 9 employeesAlamo, CABased in Alamo, California, Pinevision Design Studio is a web design company. The team offers Web Design and Branding.Read More
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2439Undisclosed2 - 9 employeesElk Grove, CASynthesis : MCM is an e-commerce development company based in Elk Grove, California. They provide E-Commerce Development and Web Design.Read More
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2440Undisclosed2 - 9 employeesTustin, CAAspect Communication is a small Tustin, California-based Email Marketing company. Their services include Email Marketing and Social Media Marketing.Read More
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2441Undisclosed2 - 9 employeesTustin, CAEmail Marketing company Nessie Media Group is located in Tustin, California. Their services include Email Marketing and Social Media Marketing.Read More
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2442Undisclosed2 - 9 employeesLos Angeles, CAMerchantWords, INC., a pay per click company, was established in 2012. Located in Los Angeles, California, the team provides Pay Per Click and Search Engine Optimization.Read More
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2443Undisclosed2 - 9 employeesSanta Barbara, CALaunched in 2017, TrafficDom is a SEO agency. Their team focuses on Search Engine Optimization and Digital Strategy.Read More
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2444$1,000+10 - 49 employeesLos Angeles, CAAce Online Marketing Solutions is a small Los Angeles, California-based app development firm. The team provides Mobile App Development and Search Engine Optimization.Read More
Industries
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2445Undisclosed10 - 49 employeesNewport Beach, CAAdvice Interactive Group is a SEO agency launched in 2009. The small team focuses on Search Engine Optimization and Social Media Marketing.Read More
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2446Undisclosed10 - 49 employeesWhittier, CAGlobal IT is an Email Marketing company launched in 2004. The small team provides Email Marketing and IT managed services.Read More
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2447Undisclosed10 - 49 employeesMill Valley, CABack Office Outsourcing company GoFable was established in 2019. The team offers Back Office Outsourcing and Content Marketing.Read More
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2448Undisclosed10 - 49 employeesRedondo Beach, CAWarbasse Design, a SEO services firm, is located in Redondo Beach, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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2449Undisclosed10 - 49 employeesCarlsbad, CADefy Digital Marketing is a Marketing Strategy company. They are in Carlsbad, California and have small team. Their team specializes in Marketing Strategy and Content Marketing.Read More
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2450Undisclosed10 - 49 employeesTorrance, CAEstablished in 2015, Millennials Digital is a social media marketing company. Their team provides Social Media Marketing and Content Marketing.Read More
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2451Undisclosed10 - 49 employeesLos Angeles, CAStratDev is a Digital Strategy company. Launched in 2019, their team focuses on Digital Strategy and Conversion Optimization.Read More
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2452Undisclosed50 - 249 employeesLos Angeles, CAMod Op is a midsize Miami, Florida-based Advertising company. The team offers Advertising and Branding.Read More
Industries
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2453$5,000+50 - 249 employeesWhittier, CAIVENUE.COM is a Whittier, California-based SEO services firm. They offer Search Engine Optimization and Web Design.Read More
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2454UndisclosedFreelancer employeesVacaville, CABased in Vacaville, California, Web Design by Brandon McCloskey is a small web design company. The team focuses on Web Design and Search Engine Optimization.Read More
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2455Undisclosed50 - 249 employeesWalnut Creek, CAEstablished in 2009, Delta Infomatix, a midsize Email Marketing company, is based in Walnut Creek, California. Their team provides Email Marketing and Pay Per Click.Read More
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2456Undisclosed50 - 249 employeesSanta Ana, CAPowerPhrase Marketing is a midsize Logo company launched in 2004. Their services include Logo and Search Engine Optimization.Read More
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2457Undisclosed50 - 249 employeesLos Angeles, CAReputation Rehab is a midsize Los Angeles, California-based social media marketing agency. Their services include Social Media Marketing and Email Marketing.Read More
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2458Undisclosed250 - 999 employeesSan Diego, CAAgital is a branding company. They are headquartered in Burlington, Massachusetts and Washington, District of Columbia and have midsize team. They offer Branding and Social Media Marketing.Read More
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2459Undisclosed2 - 9 employeesStockton, CATeam X Pro is an user experience design company. Their small team of employees is based in Karachi, Pakistan and Stockton, California. Their team focuses on UX/UI Design and Social Media Marketing.Read More
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2460$1,000+50 - 249 employeesSan Francisco, CAEstablished in 2023, Premium Designs Studio is a web design agency. The team provides Web Design and Logo and is based in London, England and San Francisco, California.Read More
Industries
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