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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991$1,000+50 - 249 employeesSan Francisco, CAGreen Leaf Publishers LLC is a San Francisco, California-based social media marketing company. The team specializes in Social Media Marketing and Affiliate Marketing.Read More
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992Undisclosed50 - 249 employeesLos Angeles, CAFounded in 2016, Splendid Logo is a branding agency. The team offers Branding and Social Media Marketing.Read More
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993Undisclosed50 - 249 employeesPasadena, CAWeb Design Digits is a social media marketing company. Launched in 2000, the firm is in Pasadena, California. Their services include Social Media Marketing and Search Engine Optimization.Read More
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994$1,000+50 - 249 employeesSan Diego, CAWeb Verse Pro, a branding firm, was established in 2010. They specializes in Branding and Social Media Marketing.Read More
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995Undisclosed50 - 249 employeesSan Francisco, CABrandova Tech is a San Francisco, California-based branding agency. They offer Branding and Search Engine Optimization.Read More
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996$1,000+50 - 249 employeesLos Angeles, CACode 9 Web Studios, a SEO agency, is headquartered in Los Angeles, California. Their services include Search Engine Optimization and Pay Per Click.Read More
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997$1,000+50 - 249 employeesIrvine, CAWolcott Publishing is a SEO agency. Launched in 2010, the team provides Search Engine Optimization and Print Design.Read More
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998$1,000+50 - 249 employeesLos Angeles, CAAdvance Ghostwriting is a Los Angeles, California-based Content Marketing company. Their services include Content Marketing and Search Engine Optimization.Read More
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999Undisclosed50 - 249 employeesSan Francisco, CAWeb development firm websiteoptimax is headquartered in San Francisco, California. They focus on Web Development and Web Design.Read More
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1000$5,000+2 - 9 employeesSausalito, CALaunched in 2020, Haus Haus Design is a web design company. Their team offers Web Design and Web Development.Read More
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1001$1,000+10 - 49 employeesNorco, CABranding firm Kulture Konnect was launched in 2005. The small team specializes in Branding and Marketing Strategy.Read More
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1002$5,000+10 - 49 employeesMenlo Park, CABrainrider is a Digital Strategy company. They offer Digital Strategy and Content Marketing and were launched in 2010.Read More
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1003$5,000+10 - 49 employeesGlendale, CASoftline Solutions is a Glendale, California-based PPC company. Established in 2008, the team offers Pay Per Click and Ecommerce Marketing.Read More
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1004Undisclosed10 - 49 employeesFremont, CAIT managed services company PlanetMagpie IT Consulting was founded in 1998. The company offers IT managed services and IT staff augmentation, and is small.Read More
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1005Undisclosed10 - 49 employeesWindsor, CAFounded in 2018, VTraffic.io is a Digital Strategy company. The team offers Digital Strategy and Social Media Marketing.Read More
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1006$5,000+2 - 9 employeesSan Jose, CASmall Conversion Optimization company Mobistreak, Inc., is in San Jose, California and Walnut, California. The team specializes in Conversion Optimization and Pay Per Click.Read More
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1007$1,000+2 - 9 employeesSanta Cruz, CAIversen Design is a web design company. They specialize in Web Design and Search Engine Optimization and were launched in 2009. The agency is in Santa Cruz, California.Read More
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1008$1,000+2 - 9 employeesSan Jose, CAIT managed services company offthegridit was founded in 2012. The team provides IT managed services and Cybersecurity.Read More
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1009$1,000+10 - 49 employeesBeverly Hills, CADiscoverMyBusiness is a pay per click company established in 2018. They are based in New York, New York; London, England; Madrid, Spain and Beverly Hills, California and have a small team. Their services include Pay Per Click, Social Media Marketing, and Search Engine Optimization.Read More
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1010$1,000+10 - 49 employeesUnion City, CASocial media marketing company AI Source Hub was launched in 2022. The small team focuses on Social Media Marketing and Content Marketing.Read More
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1011Undisclosed2 - 9 employeesSunnyvale, CADonnan Creative Strategy, a small social media marketing agency, is based in Sunnyvale, California. The team focuses on Social Media Marketing and Content Marketing.Read More
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1012$5,000+10 - 49 employeesSan Francisco, CATrier and Company is an Advertising company. They specialize in Advertising and Branding and were established in 2001.Read More
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1013$5,000+10 - 49 employeesSan Diego, CABask Digital Media is an Advertising company. Their small team of employees is based in San Diego, California. Their team specializes in Advertising and Digital Strategy.Read More
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1014$1,000+10 - 49 employeesLaguna Niguel, CASmith Consulting is an e-commerce development company. The team provides E-Commerce Development and Custom Software Development, and the firm is based in Laguna Niguel, California.Read More
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1015$1,000+2 - 9 employeesLos Angeles, CAEstablished in 2018, Quickstrike Studios is a small media planning and buying company based in Los Angeles, California. Their team specializes in Media Planning & Buying and Advertising.Read More
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1016$1,000+2 - 9 employeesLos Angeles, CAWeb design agency Sites By Us specializes in Web Design and Digital Strategy. They were founded in 2016.Read More
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1017$10,000+10 - 49 employeesLos Angeles, CARead More
Top Notch Dezigns® is a small web design agency. Founded in 2004, the firm is headquartered in New York, New York; Melville, New York; Los Angeles, California and London, England. Their team specializes in Web Design, Search Engine Optimization, Pay Per Click, Web Development, and more.
Clients
Home Depot Meadowbrook Financial Mortgage Bankers Long Island University Student Nursing Association (SNA) CassoneIndustries
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1018Undisclosed10 - 49 employeesRiverside, CA5 Core Inc is a Contract Manufacturing company. They were founded in 2020, and their services include Contract Manufacturing and Social Media Marketing.Read More
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1019$1,000+50 - 249 employeesAlbany, CAESP WebZing, a custom software development company, was launched in 2001. They focuses on Custom Software Development and UX/UI Design.Read More
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1020Undisclosed50 - 249 employeesLake Forest, CAEstablished in 2008, Over the Top is a social media marketing company. The team offers Social Media Marketing and Advertising.Read More
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