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.
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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1471Undisclosed50 - 249 employeesFremont, CARead More
EZdia Inc. Is an artificial intelligence development company in Fremont, California. The midsize team offers Artificial Intelligence, content marketing, e-commerce development, and search engine optimization. The company was launched in 2010.
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1472Undisclosed50 - 249 employeesRoseville, CAKukui Corporation is an Advertising company. The agency is based in Roseville, California. Their services include Advertising and Conversion Optimization.Read More
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1473Undisclosed50 - 249 employeesMurrieta, CAProSites is a social media marketing firm. Launched in 2003, the company is located in Murrieta, California. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1474Undisclosed50 - 249 employeesRoseville, CABlastX Consulting is a SEO services firm. The Roseville, California-based company was launched in 1999. Their team specializes in Search Engine Optimization and UX/UI Design.Read More
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1475UndisclosedFreelancer employeesOakland, CAPaul Andre is a SEO company. They focus on Search Engine Optimization and Pay Per Click and were launched in 2023. The firm is located in Oakland, California.Read More
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1476$5,000+10 - 49 employeesLos Angeles, CALaunched in 2017, Equinox Dynamics LDA is a SEO agency. They are in Esgueira, Portugal; Chicago, Illinois; New York, New York and Los Angeles, California and have a small team. The company offers Search Engine Optimization.Read More
Clients
MySpace Happenventures Petaljet MelroseIndustries
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1477$10,000+10 - 49 employeesLos Angeles, CAFounded in 2018, FluidRank is an e-commerce development firm. Their services include E-Commerce Development and Web Design.Read More
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1478$1,000+2 - 9 employeesAlhambra, CASEO services firm Sparksbox was launched in 2014. The small team offers search engine optimization, pay per click, and web development. The agency is located in Alhambra, California.Read More
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1479Undisclosed50 - 249 employeesSan Francisco, CARead More
Racepoint Global is a digital marketing and PR agency headquartered in Boston, MA with 9 offices scattered throughout the United States, China, and the United Kingdom. Founded in 2003, Racepoint Global is a large firm with around 420 employees and often works with international corporations. Most of their services are centered around traditional and online PR placement, but Racepoint also offers content marketing, social media marketing, and more.
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HuaweiIndustries
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1480$1,000+2 - 9 employeesSanta Ana, CASEO agency SEO Experts is headquartered in Santa Ana, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1481Undisclosed10 - 49 employeesFullerton, CASmall SEO services firm Sariya IT, is in Gazipur, Bangladesh; Portland, Oregon; Fullerton, California and Dallas, Texas. They focus on Search Engine Optimization, Pay Per Click, Web Development, Graphic Design, and more and were founded in 2015.Read More
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1482$1,000+Freelancer employeesSan Diego, CASEO company San Diego SEO Agency was launched in 2026. The firm focuses on Search Engine Optimization.Read More
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1483$1,000+10 - 49 employeesLos Angeles, CASmall SEO company Growwwise, is based in Mamaia-Sat, Romania; New York, New York; London, England and Castelló de la Plana, Spain. They focus on Search Engine Optimization, Web Design, Branding, Content Marketing, and more and were launched in 2018.Read More
Clients
Re.VISAGEIndustries
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1484$5,000+2 - 9 employeesLos Angeles, CARead More
Digital Stairway is a mobile application development company. Launched in 2015, the firm is located in Austin, Texas and Los Angeles, California. The small team provides mobile app development, pay per click, search engine optimization, social media marketing, and more.
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1485$5,000+250 - 999 employeesSan Diego, CAInternet Marketing Inc. Is a SEO company located in San Diego, California and Las Vegas, Nevada. Their services include Search Engine Optimization and Advertising.Read More
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1486Undisclosed250 - 999 employeesLos Angeles, CADMA Central is a Marketing Strategy company. The team offers Marketing Strategy and Market Research and is located in Los Angeles, California.Read More
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1487Undisclosed250 - 999 employeesSanta Rosa, CAPBHS is a web design company. Established in 1977, the team offers Web Design and Video Marketing. The firm is in Santa Rosa, California.Read More
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1488$1,000+2 - 9 employeesSan Jose, CADonRoberts.com Small Business Marketing, a SEO agency, is located in San Jose, California. Their services include Search Engine Optimization and Marketing Strategy.Read More
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1489$1,000+2 - 9 employeesRoseville, CATDL Local SEO & Digital Marketing is a SEO agency founded in 2018. The team provides Search Engine Optimization and Web Design and is based in Roseville, California.Read More
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1490$1,000+Freelancer employeesSantee, CAJENRUHMAN is a SEO company. They were launched in 2004, and their services include Search Engine Optimization and Web Design.Read More
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1491$5,000+10 - 49 employeesLos Angeles, CASeoluxor is a SEO company founded in 2006. Their services include Search Engine Optimization and Conversion Optimization.Read More
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1492Undisclosed10 - 49 employeesWest Hollywood, CARead More
SmallGiants is a web development firm in London, United Kingdom. The small firm was founded in 2018. Their team provides web development, ux/ui design, application management & support, advertising, and more.
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1493Undisclosed10 - 49 employeesGlendale, CARead More
Located in Glendale, California, INSPREE is a small web design agency. Their services include web design, social media marketing, and search engine optimization.
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1494$1,000+2 - 9 employeesSunnyvale, CALaunched in 2012, Designs Engine is a Logo company. The small team provides Logo and Web Design.Read More
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1495Undisclosed2 - 9 employeesThousand Oaks, CACaliNetworks is a SEO agency. The small Thousand Oaks, California-based team specializes in Search Engine Optimization and Pay Per Click. The agency was founded in 1999.Read More
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1496$10,000+2 - 9 employeesPalo Alto, CANakora is a SEO services firm. They provide Search Engine Optimization and AI Consulting and were launched in 2025.Read More
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1497Undisclosed2 - 9 employeesSan Jose, CAWSI Net Advantage is a SEO services firm. Their team is based in San Jose, California and specializes in Search Engine Optimization and Email Marketing.Read More
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1498$5,000+2 - 9 employeesOakland, CAMeetGeraldine is a SEO services firm. They offer Search Engine Optimization and Marketing Strategy and are located in Oakland, California and Los Angeles, California.Read More
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1499Undisclosed2 - 9 employeesBeverly Hills, CAEstablished in 2013, Barclay Digital is a Business Consulting company. The agency offers Business Consulting and Search Engine Optimization, and is small.Read More
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1500Undisclosed2 - 9 employeesLos Angeles, CASDK Media is a graphic design company. They provide Graphic Design and Search Engine Optimization and are based in Los Angeles, California.Read More
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