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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1501Undisclosed2 - 9 employeesLos Angeles, CAQuinn Tech Consulting is a Business Consulting company founded in 1999. Headquartered in Los Angeles, California, the team specializes in Business Consulting and Search Engine Optimization.Read More
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1502Undisclosed2 - 9 employeesRedding, CAReverse Focus is a small Marketing Strategy company founded in 2007. Their services include Marketing Strategy and CRM consulting and SI.Read More
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1503Undisclosed2 - 9 employeesAnaheim, CAAnaheim Digital Marketing is a web design company. Their small team is in Anaheim, California. Their services include Web Design and Search Engine Optimization.Read More
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1504Undisclosed2 - 9 employeesBrentwood, CAOld River Media Group is a Brentwood, California-based SEO agency. The team provides Search Engine Optimization and Content Marketing.Read More
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1505Undisclosed2 - 9 employeesHuntington Beach, CAPh-IT Solutions, an IT managed services company, was launched in 2000. Based in Huntington Beach, California, the team specializes in IT managed services and Search Engine Optimization.Read More
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1506Undisclosed2 - 9 employeesIrvine, CAEssassin Target Marketing is a social media marketing agency. Their team is based in Irvine, California and offers Social Media Marketing and Search Engine Optimization.Read More
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1507Undisclosed2 - 9 employeesSanta Barbara, CAWeb design company Phi Web Studio was launched in 2008. The team focuses on Web Design and Web Development and is headquartered in Santa Barbara, California.Read More
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1508Undisclosed2 - 9 employeesLos Angeles, CAGlobal Digital Online is a small Los Angeles, California-based SEO agency. The team specializes in Search Engine Optimization and Web Design.Read More
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1509Undisclosed2 - 9 employeesSan Luis Obispo, CADodeca Digital is a Blockchain Marketing company. Located in San Luis Obispo, California, the company offers Blockchain Marketing and Search Engine Optimization.Read More
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1510Undisclosed2 - 9 employeesSan Jose, CAWebsite SEO Today is a SEO services firm. They are headquartered in San Jose, California and have small team. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1511Undisclosed2 - 9 employeesFontana, CASEO services firm Mobile Giant was founded in 2012. The firm offers Search Engine Optimization and Web Design.Read More
Industries
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1512Undisclosed2 - 9 employeesPleasanton, CABased in Pleasanton, California, Marketing Advantage Plus is a social media marketing agency. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1513$5,000+10 - 49 employeesPleasanton, CAPurple Cow Agency, a social media marketing firm, is located in Pleasanton, California and Cebu City, Philippines. They specialize in Social Media Marketing and Search Engine Optimization.Read More
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1514$1,000+2 - 9 employeesSanta Ana, CASagaReach Marketing is a SEO services firm. They were launched in 2021 and specialize in Search Engine Optimization and Pay Per Click.Read More
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1515$1,000+2 - 9 employeesRedondo Beach, CAArt of Next is a Digital Strategy company. Their small team is in Taipei, Taiwan and Redondo Beach, California and offers Digital Strategy and Social Media Marketing. The company was launched in 2023.Read More
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1516Undisclosed2 - 9 employeesHemet, CAPure Junk Media is a social media marketing firm launched in 1998. The small team provides Social Media Marketing and Search Engine Optimization.Read More
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1517$1,000+2 - 9 employeesRoseville, CAJucebox Local Marketing Partners is a small web design agency founded in 2012. Their services include Web Design and Content Marketing.Read More
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1518Undisclosed2 - 9 employeesTorrance, CAWebsite development company Ergoseo was established in 2012. The team focuses on Web Development and Search Engine Optimization.Read More
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1519$10,000+10 - 49 employeesLos Angeles, CARead More
Marketing strategy company Ellipsis® was established in 2018. In Worthing, United Kingdom, their small team focuses on marketing strategy, content marketing, and email marketing.
Clients
AutomatticIndustries
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1520Undisclosed2 - 9 employeesLos Angeles, CADigi Search Lab, a small Business Consulting and SEO services firm, is in Los Angeles, California. Their services include Business Consulting and Search Engine Optimization.Read More
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1521$1,000+2 - 9 employeesConcord, CALaunched in 2018, Belmarx Marketing Agency is a SEO company and social media marketing company. The agency provides Search Engine Optimization and Social Media Marketing, and is small.Read More
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1522Undisclosed2 - 9 employeesLong Beach, CAExact Latitude is a SEO services firm. The Long Beach, California-based agency specializes in Search Engine Optimization and Pay Per Click.Read More
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1523$5,000+2 - 9 employeesNewport Beach, CAMad Cats Media is a SEO company. Founded in 2015, the team provides Search Engine Optimization and Pay Per Click.Read More
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1524$1,000+2 - 9 employeesOntario, CARahziel Digital is a SEO company. In Ontario, California, the firm offers Search Engine Optimization and Content Marketing.Read More
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1525$10,000+50 - 249 employeesGlendale, CAFounded in 2002, The Search Agency is a midsize PPC company. Their services include Pay Per Click and Search Engine Optimization.Read More
Clients
Fox SportsIndustries
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1526$5,000+10 - 49 employeesEl Segundo, CAHighly Relevant is a SEO agency. Founded in 2009, the company is in El Segundo, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1527$1,000+10 - 49 employeesBeverly Hills, CAWebsite Growth is a SEO services firm launched in 1995. The firm specializes in Search Engine Optimization and Social Media Marketing.Read More
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1528$1,000+10 - 49 employeesLos Angeles, CANKP Medical is a small PPC company located in Los Angeles, California. The team specializes in Pay Per Click and Search Engine Optimization.Read More
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1529Undisclosed10 - 49 employeesCulver City, CARedbird Group is a branding company. Located in Culver City, California, the firm was established in 1996. Their team specializes in Branding and Media Planning & Buying.Read More
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1530Undisclosed10 - 49 employeesSan Diego, CAReader Digital Agency is an Email Marketing company. Launched in 2014, the agency focuses on Email Marketing and Search Engine Optimization.Read More
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