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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871$1,000+10 - 49 employeesBakersfield, CAWebmark is a Bakersfield, California-based SEO company. Their services include Search Engine Optimization and Pay Per Click.Read More
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872Undisclosed10 - 49 employeesLos Angeles, CARapid X SEO is an Advertising company. They are in Los Angeles, California and Los Angeles, California and have small team of experts. Their services include Advertising and Branding.Read More
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873$1,000+10 - 49 employeesLos Angeles, CABased in Los Angeles, California, GrowthBridge Consulting is a social media marketing agency. Their services include Social Media Marketing and Search Engine Optimization.Read More
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874$1,000+10 - 49 employeesPleasanton, CAKlystron is a SEO services firm. Their team is headquartered in Pleasanton, California. The firm specializes in Search Engine Optimization and Custom Software Development.Read More
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875$5,000+50 - 249 employeesSan Leandro, CAInternet Soft is a San Leandro, California-based SEO services firm. Founded in 2010, the midsize team provides search engine optimization, ux/ui design, custom software development, mobile app development, and more.Read More
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876Undisclosed50 - 249 employeesSan Diego, CAIn San Diego, California, California Web Coders is a midsize social media marketing firm. Their services include Social Media Marketing and Search Engine Optimization.Read More
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877$1,000+10 - 49 employeesSan Diego, CASEO services firm Npointseo was launched in 2019. Their small team is in San Diego, California. Npointseo offers search engine optimization, web design, and web development.Read More
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878$5,000+10 - 49 employeesNewport Beach, CASitePrism is a small Newport Beach, California-based Advertising company. The team focuses on Advertising and Content Marketing.Read More
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879$5,000+2 - 9 employeesRocklin, CAMod Girl Marketing is a Digital Strategy company. Their small team is in Rocklin, California. Their services include Digital Strategy and Content Marketing.Read More
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880$10,000+50 - 249 employeesSan Francisco, CAAntenna Group, a public relations agency, was established in 1996. The agency offers Public Relations and Digital Strategy, and is midsize.Read More
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881$1,000+2 - 9 employeesEscondido, CAIn Escondido, California, Galvanic Solutions is a Content Marketing company. They provide Content Marketing and Conversion Optimization and were established in 2019.Read More
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882$1,000+2 - 9 employeesOceanside, CABryte Marketing is a social media marketing firm. Established in 2020, the team provides Social Media Marketing and Search Engine Optimization.Read More
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883$1,000+10 - 49 employeesHawthorne, CALaunched in 2001, Hostrings is a web design company. They are in Karachi, Pakistan and Hawthorne, California and have a small team. Their services include web design, advertising, search engine optimization, ux/ui design, and more.Read More
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884$1,000+2 - 9 employeesSanta Monica, CASmall Digital Strategy company ST8, is headquartered in Santa Monica, California. The team specializes in Digital Strategy and Search Engine Optimization.Read More
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885$1,000+2 - 9 employeesPasadena, CATerminus Agency is a small Pasadena, California-based social media marketing agency. Their services include Social Media Marketing and Web Design.Read More
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886$25,000+2 - 9 employeesLos Angeles, CADrawing From Memory is a small Advertising company established in 2008. Their services include Advertising and Branding.Read More
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887$5,000+2 - 9 employeesSan Diego, CAICatch Marketing LLC is a small Advertising company launched in 2014. Their team offers Advertising and Branding.Read More
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888$5,000+2 - 9 employeesSan Diego, CAAdvertising company Parallel Interactive specializes in Advertising and Branding. They were established in 1998.Read More
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889$5,000+2 - 9 employeesCastro Valley, CASEO PRO is a SEO agency. Their team is located in Castro Valley, California. The company provides Search Engine Optimization and Social Media Marketing.Read More
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890$5,000+2 - 9 employeesSan Jose, CAElectroRocket Productions is a San Jose, California-based Content Marketing company. They offer Content Marketing and Graphic Design.Read More
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891$10,000+2 - 9 employeesPasadena, CAThe AdMark Group, a small media planning & buying agency, is in Pasadena, California. Their services include Media Planning & Buying and Public Relations.Read More
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892$5,000+2 - 9 employeesBeverly Hills, CAMD Logica is a Business Consulting company. They are based in Beverly Hills, California and have small team. Their team offers Business Consulting and Pay Per Click.Read More
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893Undisclosed2 - 9 employeesLos Angeles, CARemnant Marketing is a Digital Strategy company. The team is based in Los Angeles, California, and their services include Digital Strategy and Pay Per Click.Read More
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894$1,000+2 - 9 employeesGarden Grove, CAFounded in 2013, Zega Logos, a small Logo company, is based in Garden Grove, California. Their team offers Logo and Mobile App Development.Read More
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895Undisclosed2 - 9 employeesFullerton, CAFratzke Media is a small Fullerton, California-based call center. Their services include Call Center Services and Content Marketing.Read More
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896$10,000+2 - 9 employeesSan Diego, CACorporate Photography company Enne Bi Communications is located in San Diego, California. The team specializes in Corporate Photography and Graphic Design.Read More
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897Undisclosed2 - 9 employeesSan Diego, CAJ&S Digital Services is an Advertising company. The San Diego, California-based company offers Advertising and Branding.Read More
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898Undisclosed2 - 9 employeesConcord, CAALFATEK is a Concord, California-based branding agency. They offer Branding and Social Media Marketing.Read More
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899Undisclosed2 - 9 employeesSan Diego, CABased in San Diego, California, The Marketing Group USA is a Digital Strategy company. They provide Digital Strategy and Social Media Marketing.Read More
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900$1,000+2 - 9 employeesLos Angeles, CADesigns2Life, a Business Consulting company, is headquartered in Los Angeles, California. The team provides Business Consulting and Market Research.Read More
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Check out a SEO Company in California with the most new reviews in the past 12 months.
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