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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1801Undisclosed2 - 9 employeesSanta Barbara, CAAmeravant Web Design Studio is a Digital Strategy company. The Santa Barbara, California-based firm specializes in Digital Strategy and Search Engine Optimization.Read More
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1802$5,000+Freelancer employeesOakland, CASmall branding agency and SEO agency Uncommon Growth Studio, is in Oakland, California. The team provides Branding and Search Engine Optimization.Read More
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1803$1,000+Freelancer employeesLos Angeles, CABest Roofing SEO Services, a SEO services firm, was launched in 2022. The team provides Search Engine Optimization and Web Development.Read More
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1804$1,000+10 - 49 employeesAgoura Hills, CAEstablished in 2022, Pro Seller Marketing, a small Advertising company, is in Agoura Hills, California. Their team offers Advertising and Search Engine Optimization.Read More
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1805$1,000+2 - 9 employeesPasadena, CAL2 Digital Marketing is a SEO agency. Launched in 2019, the firm focuses on Search Engine Optimization and Web Design.Read More
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1806$1,000+10 - 49 employeesSan Francisco, CAFounded in 2013, OrganizeIn is a pay per click agency. The small team provides Pay Per Click and Search Engine Optimization.Read More
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1807$1,000+10 - 49 employeesSan Francisco, CAGetLegal is an Advertising company. Headquartered in San Francisco, California, the firm was established in 1999. Their team offers Advertising and Search Engine Optimization.Read More
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1808$1,000+10 - 49 employeesDublin, CAOpal Infotech INC is a SEO company. They are based in Dublin, California. Their team provides Search Engine Optimization and Pay Per Click.Read More
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1809$5,000+2 - 9 employeesRiverside, CAArkside Marketing, Inc. Is an Advertising company. Their small team of employees is located in Riverside, California. Their team offers Advertising and Branding.Read More
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1810Undisclosed2 - 9 employeesOrange, CAOrange Web Group, LLC, a SEO company, is in Orange, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1811$5,000+2 - 9 employeesSan Jose, CARobert Nicholson Consulting is a social media marketing agency. Launched in 2016, the company specializes in Social Media Marketing and Search Engine Optimization.Read More
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1812$1,000+2 - 9 employeesOceanside, CAAI Advantage Agency is a pay per click agency. The Oceanside, California-based company provides Pay Per Click and AI Consulting.Read More
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1813UndisclosedFreelancer employeesClovis, CAAshmith.com is a web design company. The team focuses on Web Design and Search Engine Optimization, and the company is based in Clovis, California.Read More
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1814$5,000+250 - 999 employeesLos Angeles, CATeam One is a Digital Strategy company. Established in 1987, the team offers Digital Strategy and Advertising.Read More
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The Ritz CarltonIndustries
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1815Undisclosed250 - 999 employeesSan Francisco, CADemandbase, a branding firm, is headquartered in San Francisco, California and St Albans, England. They focus on Branding and Marketing Strategy.Read More
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1816UndisclosedFreelancer employeesSanta Monica, CAGlorious Concepts LLC is a small SEO services firm in Santa Monica, California. Their services include Search Engine Optimization and Web Design.Read More
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1817$5,000+2 - 9 employeesLos Angeles, CASEO Services LA is a small Los Angeles, California-based SEO company. Their services include Search Engine Optimization and Web Design.Read More
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1818Undisclosed50 - 249 employeesLos Angeles, CAJWT INSIDE is an user experience design company established in 1949. The company offers UX/UI Design and Branding.Read More
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1819UndisclosedFreelancer employeesStockton, CAMarquis Trail Marketing is a Stockton, California-based SEO services firm. Established in 2016, the team provides Search Engine Optimization.Read More
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1820Undisclosed50 - 249 employeesCosta Mesa, CASEO services firm and social media marketing company 247.inc is in Costa Mesa, California. They focus on Search Engine Optimization and Social Media Marketing.Read More
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1821Undisclosed50 - 249 employeesRoseville, CAFounded in 2006, OnSumaye Web Solutions is a Marketing Strategy and SEO services firm. The team focuses on Marketing Strategy and Search Engine Optimization.Read More
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1822Undisclosed50 - 249 employeesBrea, CAIntact Info, a midsize public relations firm, is based in Brea, California. Their services include Public Relations and Social Media Marketing.Read More
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1823Undisclosed50 - 249 employeesSunnyvale, CABaidu USA is an artificial intelligence firm. The Sunnyvale, California-based company was founded in 2014. Their team specializes in Artificial Intelligence and Advertising.Read More
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1824$5,000+2 - 9 employeesLos Angeles, CAGobiya Agency is an Advertising company. They are based in Los Angeles, California, and their services include Advertising and Branding.Read More
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1825$5,000+2 - 9 employeesSan Jose, CAKat & Mouse Co. Is a Conversion Optimization company established in 1995. The small team specializes in Conversion Optimization and Pay Per Click.Read More
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1826Undisclosed2 - 9 employeesRancho Cucamonga, CAGraphic design agency Websites Makeover is headquartered in Rancho Cucamonga, California. Founded in 2010, the team provides Graphic Design and Logo.Read More
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1827Undisclosed2 - 9 employeesLos Angeles, CALogo company Ad Inicio Digital is based in Los Angeles, California. They specialize in Logo and Other Digital Marketing.Read More
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1828$5,000+2 - 9 employeesSan Francisco, CABay Laurel Solutions is a website development company headquartered in San Francisco, California. They provide Web Development and Search Engine Optimization and were launched in 2023.Read More
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1829$1,000+2 - 9 employeesLos Angeles, CAAIEO is an AI Consulting company. They are based in Winnipeg, Canada and Los Angeles, California and have small team of experts. Their services include AI Consulting and Generative AI.Read More
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1830$5,000+2 - 9 employeesPalm Springs, CAOpen Lines Marketing, a Digital Strategy company, was founded in 2015. The team focuses on Digital Strategy and Content Marketing and is headquartered in Palm Springs, California.Read More
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