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.
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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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1591Undisclosed2 - 9 employeesVacaville, CALittle Wing Connections is a small Vacaville, California-based PR agency. The team provides Public Relations and Search Engine Optimization.Read More
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1592Undisclosed2 - 9 employeesRedding, CAHall of Fame Marketing, a PPC agency, focus on Pay Per Click and Search Engine Optimization. They were established in 2009.Read More
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1593Undisclosed2 - 9 employeesRedondo Beach, CAFounded in 2012, Marketing-Aces is an Email Marketing company. The firm focuses on Email Marketing and Pay Per Click.Read More
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1594Undisclosed2 - 9 employeesLivermore, CAFound Sites Digital Marketing & Web Design is a PPC company headquartered in Livermore, California. Launched in 2019, the team specializes in Pay Per Click and Search Engine Optimization.Read More
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1595Undisclosed2 - 9 employeesLos Angeles, CAMarketing Strategy company BlackGrid SEO is located in Los Angeles, California. Established in 2015, the team specializes in Marketing Strategy and Search Engine Optimization.Read More
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1596Undisclosed2 - 9 employeesRedondo Beach, CAAbbott Marketing Agency is a branding firm based in Redondo Beach, California. Launched in 2013, the team focuses on Branding and Search Engine Optimization.Read More
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1597Undisclosed2 - 9 employeesStockton, CABrentwood Visual is a small Stockton, California-based Content Marketing company. The team offers Content Marketing and Search Engine Optimization.Read More
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1598Undisclosed2 - 9 employeesLivermore, CATri-Valley Internet is an IT managed services company founded in 1995. The company provides IT managed services and IT strategy consulting, and is small.Read More
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1599Undisclosed2 - 9 employeesRedwood City, CACrewMachine is a small Redwood City, California-based artificial intelligence firm. Their services include Artificial Intelligence and CRM consulting and SI.Read More
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1600Undisclosed2 - 9 employeesSacramento, CAInstinct Marketing is a small Content Marketing company located in Sacramento, California. The team focuses on Content Marketing and Pay Per Click.Read More
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1601Undisclosed2 - 9 employeesChico, CADiverse Network Associates, Inc., an e-commerce development firm, is headquartered in Chico, California. The team focuses on E-Commerce Development and Search Engine Optimization.Read More
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1602Undisclosed2 - 9 employeesBrentwood, CAWeblative is a small Content Marketing company in Brentwood, California. Their services include Content Marketing and Search Engine Optimization.Read More
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1603Undisclosed2 - 9 employeesSan Diego, CAElixir Connect is a SEO services firm. They are based in San Diego, California and have small team. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1604Undisclosed2 - 9 employeesSan Francisco, CAUnderstanding eCommerce is a social media marketing firm launched in 2003. The team specializes in Social Media Marketing and Content Marketing.Read More
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1605Undisclosed2 - 9 employeesTemecula, CACustom-brewed-content-marketing is a social media marketing firm launched in 2001. The agency focuses on Social Media Marketing and Search Engine Optimization, and is small.Read More
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1606Undisclosed2 - 9 employeesSan Jose, CASEO services firm Zexler was established in 2013. The firm focuses on Search Engine Optimization and Pay Per Click, and is small.Read More
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1607Undisclosed2 - 9 employeesLos Angeles, CAIn Los Angeles, California, Reaction Concepts LLC is a small social media marketing company. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1608Undisclosed2 - 9 employeesSanta Monica, CABright Horizons Media is an Advertising company. Established in 2011, the team provides Advertising and Social Media Marketing.Read More
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1609Undisclosed2 - 9 employeesSanta Monica, CASeo Company Santa Monica is a small social media marketing firm launched in 2007. Their team offers Social Media Marketing and Search Engine Optimization.Read More
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1610Undisclosed2 - 9 employeesFolsom, CASmall e-commerce development company Web eCommerce Developer, is located in Folsom, California. The team provides E-Commerce Development and Search Engine Optimization.Read More
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1611Undisclosed2 - 9 employeesSanta Maria, CAEconcept Inc is a social media marketing firm in Santa Maria, California. The team focuses on Social Media Marketing and Search Engine Optimization.Read More
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1612$10,000+50 - 249 employeesPleasanton, CARead More
Founded in 2011, Bytes Technolab is a software development company that specializes in eCommerce, web, and mobile app development. Headquartered in N.J., the team of 44 works with mid-market businesses in the e-commerce, consumer services, and real estate industries.
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1613$1,000+Freelancer employeesSan Diego, CAEric Strate is a SEO company. Located in San Diego, California, the team provides Search Engine Optimization and Digital Strategy.Read More
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1614$5,000+2 - 9 employeesRiverside, CASevilla Local Media, a mobile application development company, was established in 2010. The team focuses on Mobile App Development and Social Media Marketing.Read More
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1615Undisclosed2 - 9 employeesGardena, CADigital Twenty47, a SEO company, was launched in 2020. The small team provides Search Engine Optimization and Content Marketing.Read More
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1616$5,000+2 - 9 employeesLos Angeles, CASEO Direct is a Marketing Strategy company founded in 2010. Their team focuses on Marketing Strategy and Search Engine Optimization.Read More
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1617$1,000+Freelancer employeesJamestown, CAPurposeful Marketing - Web Design, SEO, Social Media Advertising, San Francisco, Sacramento, Modesto, Central Valley Company is a SEO company. Their team focuses on Search Engine Optimization.Read More
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1618$1,000+10 - 49 employeesSan Diego, CARead More
Out of Business - Astash Web Design and Marketing is a branding agency founded in 2018. Their small team is located in Denver, Colorado; Fort Collins, Colorado; San Diego, California and Las Vegas, Nevada and specializes in Branding, Social Media Marketing, Search Engine Optimization, Pay Per Click, and more.
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1619Undisclosed2 - 9 employeesHuntington Beach, CAOrrku Media is a branding firm. Launched in 2024, the team offers Branding and Social Media Marketing. The firm is based in Huntington Beach, California.Read More
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1620Undisclosed2 - 9 employeesInglewood, CADopWeb is a SEO agency. The team is located in Inglewood, California, and their services include Search Engine Optimization and Digital Strategy.Read More
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