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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2401Undisclosed2 - 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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2402Undisclosed2 - 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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2403Undisclosed2 - 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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2404$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
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2405Undisclosed10 - 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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2406Undisclosed10 - 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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2407Undisclosed10 - 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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2408Undisclosed10 - 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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2409Undisclosed10 - 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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2410Undisclosed10 - 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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2411Undisclosed10 - 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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2412Undisclosed50 - 249 employeesLos Angeles, CAMod Op is a midsize Miami, Florida-based Advertising company. The team offers Advertising and Branding.Read More
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2413$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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2414UndisclosedFreelancer 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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2415Undisclosed50 - 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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2416Undisclosed50 - 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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2417Undisclosed50 - 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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2418Undisclosed250 - 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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2419Undisclosed2 - 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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2420$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
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2421Undisclosed50 - 249 employeesBerkeley, CALaunched in 1995, Neoscape is a branding agency. The midsize team specializes in Branding and Graphic Design.Read More
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2422Undisclosed1,000 - 9,999 employeesMoorpark, CALocated in Cedar Rapids, Iowa; King of Prussia, Pennsylvania; Granville, Ohio and Moorpark, California, Hibu is a website development firm. The large team specializes in Web Development, Search Engine Optimization, and Social Media Marketing. The agency was founded in 1983.Read More
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2423$1,000+2 - 9 employeesGlendale, CALaunched in 1999, Sedna Solutions, a small SEO company, is headquartered in Glendale, California. Their team provides Search Engine Optimization and Social Media Marketing.Read More
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2424$5,000+2 - 9 employeesLos Angeles, CADK Interactive Design is a small graphic design agency headquartered in Los Angeles, California. The team specializes in Graphic Design and Search Engine Optimization.Read More
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2425$5,000+2 - 9 employeesLos Angeles, CATyler D. Perez Consulting is an IT managed services company founded in 2006. The team offers IT managed services and Pay Per Click.Read More
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2426$5,000+2 - 9 employeesAlamo, CAAlamoWeb Solutions is a Logo company. They are located in Alamo, California and have small team. Their team specializes in Logo and Search Engine Optimization.Read More
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2427$5,000+2 - 9 employeesSan Francisco, CASEO company Digital Narrative is headquartered in San Francisco, California. They specialize in Search Engine Optimization and Web Design.Read More
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2428$5,000+2 - 9 employeesEl Dorado Hills, CAFirethorne Design, an e-commerce development firm, was established in 2009. The team offers E-Commerce Development and Mobile App Development and is in El Dorado Hills, California.Read More
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2429$5,000+2 - 9 employeesSan Ramon, CARKS Marketing & Web Design is a social media marketing agency. They were established in 1996 and specialize in Social Media Marketing and Search Engine Optimization.Read More
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2430$1,000+2 - 9 employeesConcord, CAMJB CONSULTANTS is a branding agency. They provide Branding and Search Engine Optimization and were launched in 2009. The company is located in Concord, California.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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