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.
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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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1141$1,000+10 - 49 employeesDiamond Bar, CAMRJ SOFT is an Advertising company. Based in Diamond Bar, California, the team offers Advertising and Branding.Read More
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1142$1,000+10 - 49 employeesLos angeles, CAContent Marketing company Brandvault360 is located in Los angeles, California. They provide Content Marketing and E-Commerce Development.Read More
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1143$1,000+10 - 49 employeesFremont, CAEInnoSys is a software development firm. The team is located in Fremont, California and Ahmedabad, India, and their services include Custom Software Development and Search Engine Optimization.Read More
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1144$1,000+10 - 49 employeesRiverside, CA5 Core Digital Marketing is a social media marketing firm. In Riverside, California, their small team focuses on Social Media Marketing and Content Marketing. The company was founded in 1984.Read More
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1145$1,000+10 - 49 employeesSan Jose, CALaunched in 2018, Shubpy Solutions Pvt Ltd is a custom software development company. The small team focuses on Custom Software Development and Search Engine Optimization.Read More
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1146$1,000+2 - 9 employeesIrvine, CALaderaLabs.io is a SEO services firm. In Irvine, California, the firm provides Search Engine Optimization and Artificial Intelligence.Read More
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1147$25,000+250 - 999 employeesSan Diego, CAEstablished in 2008, REQ is a public relations agency. Their midsize team is headquartered in Washington, District of Columbia; Phoenix, Arizona; Burlington, Massachusetts and Raleigh, North Carolina. Their services include Public Relations, Advertising, Branding, and Search Engine Optimization.Read More
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1148Undisclosed10 - 49 employeesSan Francisco, CARank Science Inc. Is a SEO services firm founded in 2016. The team focuses on Search Engine Optimization and Pay Per Click and is based in San Francisco, California.Read More
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1149Undisclosed10 - 49 employeesLos Angeles, CAFounded in 1998, Professional Optimizer is a SEO company. The team provides Search Engine Optimization and Social Media Marketing.Read More
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1150Undisclosed10 - 49 employeesIrvine, CAEstablished in 2009, Local SEO Help is a SEO company. The team specializes in Search Engine Optimization and Social Media Marketing and is in Irvine, California.Read More
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1151Undisclosed10 - 49 employeesSan Diego, CAArvanza Consulting is a small San Diego, California-based SEO company and pay per click company. Their services include Search Engine Optimization and Pay Per Click.Read More
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1152$1,000+50 - 249 employeesPalo Alto, CAAmz Ready is an Other Digital Marketing company. The team specializes in Other Digital Marketing and Business Consulting and is located in Palo Alto, California.Read More
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1153$1,000+50 - 249 employeesOakland, CABranding company Pace Digitals offers Branding and Social Media Marketing. They were launched in 2016.Read More
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1154$5,000+50 - 249 employeesLos Angeles, CASwipecreatif is a branding agency established in 2022. The team provides Branding and Social Media Marketing and is located in Los Angeles, California and Los Angeles, California.Read More
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1155$1,000+50 - 249 employeesSunnyvale, CAContent Marketing company The Web Coders Agency is based in Sunnyvale, California. Their services include Content Marketing and Mobile & App Marketing.Read More
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1156$10,000+2 - 9 employeesSan Jose, CAEstablished in 2013, AIG MARKETER is a PPC agency. The team offers Pay Per Click and Digital Strategy and is based in San Jose, California.Read More
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1157Undisclosed2 - 9 employeesLong Beach, CADesignFluxx is a small web design agency. Founded in 2011, the team offers Web Design and Branding.Read More
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1158$5,000+2 - 9 employeesSan Francisco, CAIn San Francisco, California, Leapup Marketing Solutions is a Digital Strategy company. They specialize in Digital Strategy and Marketing Strategy and were launched in 2002.Read More
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1159$5,000+2 - 9 employeesLos Angeles, CAVolcanic Star, LLC is a web development firm. Established in 2013, the company is in Los Angeles, California and. Their services include Web Development and Mobile App Development.Read More
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1160$5,000+2 - 9 employeesLos Angeles, CALIVALTO is a web design agency. They are headquartered in Los Angeles, California, and their services include Web Design and Branding.Read More
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1161$1,000+2 - 9 employeesNewport Beach, CATechifornia IT Services is an IT managed services company. In Newport Beach, California, the team specializes in IT managed services and IT strategy consulting.Read More
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1162$1,000+2 - 9 employeesSan Francisco, CA150birds is an Advertising company in San Francisco, California. They focus on Advertising and Branding.Read More
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1163$1,000+2 - 9 employeesSan Ramon, CABlueZooWeb is a web design company. They are in San Ramon, California. Their team focuses on Web Design and Branding.Read More
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1164Undisclosed2 - 9 employeesVisalia, CAEstablished in 1990, On the Horizon Communications is an Advertising company. Their services include Advertising and Public Relations.Read More
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1165$1,000+10 - 49 employeesPalo Alto, CAThe Backlink Company, a SEO agency, is located in Palo Alto, California and Helsinki, Finland. They provide Search Engine Optimization and were founded in 2023.Read More
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1166Undisclosed2 - 9 employeesWalnut Creek, CATEEDUP, an Email Marketing company, was launched in 2018. The team offers Email Marketing and Digital Strategy and is headquartered in Walnut Creek, California.Read More
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1167$1,000+2 - 9 employeesBeverly Hills, CAFounded in 2018, Digital Beverly is a PPC company. The team specializes in Pay Per Click and Search Engine Optimization.Read More
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1168$1,000+2 - 9 employeesCarlsbad, CAFounded in 2012, Push Marketing is a small Carlsbad, California-based Content Marketing company. Their team specializes in Content Marketing and Digital Strategy.Read More
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1169$1,000+2 - 9 employeesFontana, CADigital Market Mind, a social media marketing firm, focuses on Social Media Marketing and Search Engine Optimization. The agency is based in Fontana, California and Eastvale, California.Read More
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1170$1,000+2 - 9 employeesTruckee, CAWeb design company Tahoe Marketing was established in 2018. The team focuses on Web Design and Social Media Marketing and is headquartered in Truckee, California.Read More
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