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.
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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571$1,000+10 - 49 employeesSan Diego, CALaunched in 2015, Rank Unlimited Marketing is an Advertising company. The agency offers Advertising and Search Engine Optimization.Read More
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572Undisclosed50 - 249 employeesLos Angeles, CAWhite Label DM is a midsize social media marketing firm. Launched in 2018, the team specializes in social media marketing, search engine optimization, and pay per click. The agency is located in Los Angeles, California.Read More
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573$5,000+10 - 49 employeesLos Angeles, CALos Angeles SEO is a small SEO agency. Founded in 2013, the team focuses on Search Engine Optimization and Pay Per Click.Read More
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574$5,000+10 - 49 employeesSanta Monica, CAEmpress is a social media marketing agency. The team specializes in Social Media Marketing and Email Marketing and is located in Santa Monica, California.Read More
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575$1,000+2 - 9 employeesIrvine, CAShorthand Content Marketing is a Content Marketing company established in 2018. Their services include Content Marketing and Social Media Marketing.Read More
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576$1,000+2 - 9 employeesSanta Rosa, CAWeb design company Fitz Designz is located in Santa Rosa, California. Their services include Web Design and Pay Per Click.Read More
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577$25,000+10 - 49 employeesSanta Monica, CALaneways Software and Digital Pty Ltd is a small software development company. The Port Melbourne, Australia-based company was founded in 2012. Their services include Custom Software Development, UX/UI Design, Application Management & Support, E-Commerce Development, and more.Read More
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Quantum UnderwritingIndustries
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578Undisclosed2 - 9 employeesIrvine, CAOC Websites is a SEO agency based in Irvine, California. Their services include Search Engine Optimization and Web Design.Read More
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579Undisclosed2 - 9 employeesGrover Beach, CACrackerjack Strategies is a Digital Strategy company. They offer Digital Strategy and Search Engine Optimization and were launched in 2020.Read More
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580$1,000+2 - 9 employeesGlendale, CAPR Register is a social media marketing firm. In Glendale, California, the firm was launched in 2020. Their services include Social Media Marketing and Search Engine Optimization.Read More
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581$5,000+50 - 249 employeesAhmedabad, IndiaElsner Technologies Pvt Ltd is a midsize SEO services firm. The Lakeland, Florida-based firm was established in 2006. Their team focuses on Search Engine Optimization, Custom Software Development, E-Commerce Development, Web Development, and more.Read More
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Kidz StoreIndustries
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582$1,000+10 - 49 employeesLos Angeles, CAAttorney Marketing Network is a SEO services firm established in 2010. The agency specializes in Search Engine Optimization and Social Media Marketing.Read More
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Charles J. Argento & Associates BertoldoIndustries
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583$5,000+2 - 9 employeesSan Jose, CAIStudios Media, a video production company, offers Video Production and Web Design. The agency is in San Jose, California and Phoenix, Arizona.Read More
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584Undisclosed2 - 9 employeesLos Angeles, CARead More
Furniture Branding is a strategic branding and marketing agency founded in Sherman Oaks, Calif. in 2010. With over two employees, they offer branding, digital strategy, and social media marketing solutions to clients across various industries.
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Domus Design CollectionIndustries
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585$1,000+10 - 49 employeesLos Angeles, CAEWM NOW is a Conversion Optimization company. Their small team is based in Los Angeles, California and offers Conversion Optimization and Digital Strategy. The agency was launched in 2018.Read More
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586$1,000+10 - 49 employeesLos Angeles, CAContractor Gorilla is a Los Angeles, California-based web design company. They focus on Web Design and Social Media Marketing and were founded in 2008.Read More
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587$10,000+10 - 49 employeesMountain View, CAE-commerce development firm Rank Up Locally was established in 2020. The small team specializes in E-Commerce Development and Search Engine Optimization.Read More
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588$5,000+250 - 999 employeesLos Angeles, CAUSA Book Promoters is a social media marketing firm established in 2016. In Los Angeles, California, the team specializes in Social Media Marketing and Content Marketing.Read More
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589Undisclosed10 - 49 employeesTopanga, CAWebsite development company How Creative was launched in 1987. The team offers Web Development and Business Consulting and is in Topanga, California and Topanga, California.Read More
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590Undisclosed2 - 9 employeesWalnut Creek, CAFour15 Digital is a pay per click company. The company is headquartered in Walnut Creek, California. Their services include Pay Per Click and Search Engine Optimization.Read More
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591$5,000+10 - 49 employeesSan Marino, CAIllumina Creative, a SEO agency, is headquartered in San Marino, California. The team offers Search Engine Optimization and Web Design.Read More
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592$5,000+50 - 249 employeesNewark, CAWebsite Developer LLC is a Content Marketing company. They are in Newark, California. Their team provides Content Marketing and Search Engine Optimization.Read More
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593$1,000+2 - 9 employeesIrvine, CAVulcan Media Group is a PPC agency. Their small team is in Irvine, California. Their services include Pay Per Click and Search Engine Optimization.Read More
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594$5,000+10 - 49 employeesGlendale, CALighthouse Digital Growth Agency is a SEO services firm. Founded in 2015, the team specializes in Search Engine Optimization and Content Marketing. The agency is located in Glendale, California.Read More
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595$5,000+10 - 49 employeesNewcastle, CASEO company Decrypt SEO is headquartered in Newcastle, California. The team provides Search Engine Optimization and Advertising.Read More
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596Undisclosed10 - 49 employeesSan Francisco, CASEO Gremlin is a SEO agency. Their small team of employees is in San Francisco, California. Their team focuses on Search Engine Optimization and Branding.Read More
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597Undisclosed2 - 9 employeesLancaster, CASEO Done Right is a SEO company. Their small team of employees is based in Lancaster, California. Their team provides Search Engine Optimization.Read More
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598Undisclosed50 - 249 employeesSan Diego, CAZ57, Inc. Is a SEO services firm. The San Diego, California-based company provides Search Engine Optimization.Read More
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599Undisclosed10 - 49 employeesDaly City, CALaunched in 2010, eZ-Xpo is a small SEO company. Their services include Search Engine Optimization.Read More
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600Undisclosed2 - 9 employeesSan Diego, CA#1 SEO is a SEO company. They were established in 2012, and their services include Search Engine Optimization.Read More
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