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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721$5,000+2 - 9 employeesSacramento, CALocated in Sacramento, California, Architected Relations is a small social media marketing agency. The team provides Social Media Marketing and Search Engine Optimization.Read More
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722Undisclosed250 - 999 employeesLos Angeles, CADigital Media Solutions Group is an Advertising company. Headquartered in Clearwater, Florida and Los Angeles, California, the company offers Advertising and Content Marketing.Read More
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723$1,000+10 - 49 employeesLos Gatos, CAAssistaNova is a branding firm. Launched in 2022, the team offers Branding and Marketing Strategy. The firm is headquartered in Los Gatos, California.Read More
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724$5,000+50 - 249 employeesSan Diego, CASiege Media is a Content Marketing company established in 2012. Located in Austin, Texas; San Diego, California and New York, New York, their midsize team provides Content Marketing, Search Engine Optimization, and Public Relations.Read More
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ZillowIndustries
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725$5,000+10 - 49 employeesSan Diego, CALaunched in 2003, Saba SEO is a small San Diego, California-based application development company. Their team specializes in Mobile App Development and Pay Per Click.Read More
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726$5,000+10 - 49 employeesSan Francisco, CA46Mile is a San Francisco, California-based Advertising company. The team specializes in Advertising and Branding.Read More
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727$5,000+10 - 49 employeesMilpitas, CAMarketshare, Inc., an Advertising company, was established in 1987. They provides Advertising and Branding.Read More
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728$5,000+10 - 49 employeesLos Angeles, CAProve is a Content Marketing company. The firm is based in Los Angeles, California. Their team focuses on Content Marketing and Mobile App Development.Read More
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729$10,000+10 - 49 employeesWalnut Creek, CAEstablished in 2017, MediaJel is an Advertising company. The team focuses on Advertising and Mobile & App Marketing.Read More
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730$1,000+10 - 49 employeesIrvine, CAYour Marketing People is a social media marketing company. Their team is located in Irvine, California and specializes in Social Media Marketing and Pay Per Click.Read More
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731Undisclosed10 - 49 employeesSan Diego, CAFounded in 2009, Mixte Marketing is a small PR agency. Their services include Public Relations and Email Marketing.Read More
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732Undisclosed10 - 49 employeesLos Angeles, CARAIN is an Advertising company. Based in Los Angeles, California, the firm was established in 2014. Their services include Advertising and Social Media Marketing.Read More
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733$1,000+10 - 49 employeesSacramento, CAMarketinGear is a Sacramento, California-based social media marketing firm. The team specializes in Social Media Marketing and Content Marketing.Read More
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734$1,000+50 - 249 employeesBakersfield, CATrust Haven Solution is a social media marketing firm. Their team is located in Bakersfield, California and Bakersfield, California and offers Social Media Marketing and Search Engine Optimization.Read More
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735$1,000+2 - 9 employeesSacramento, CAPyxel Development is a SEO services firm. They offer Search Engine Optimization and Web Design and were established in 2021. The company is located in Sacramento, California.Read More
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736Undisclosed10 - 49 employeesRancho Cucamonga, CAIMMI-MEDIA Marketing Agency is a Conversion Optimization company. The team offers Conversion Optimization and Content Marketing, and the company is based in Rancho Cucamonga, California.Read More
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737$1,000+2 - 9 employeesUpland, CAVick Agency is a branding company. The Upland, California-based agency was founded in 2020. Their team offers Branding and Digital Strategy.Read More
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738$1,000+2 - 9 employeesLaguna Hills, CABMG Marketing is a Content Marketing company. They are located in Laguna Hills, California, and their services include Content Marketing and Business Consulting.Read More
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739$10,000+50 - 249 employeesPleasanton, CATHE SEO PROZ is a Conversion Optimization company. The team is headquartered in Pleasanton, California, and their services include Conversion Optimization and Pay Per Click.Read More
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740$5,000+50 - 249 employeesLos Angeles, CA411 Webmaster is a web design company. They provide Web Design and Web Development and were founded in 2010. The firm is in Los Angeles, California.Read More
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741$1,000+50 - 249 employeesLos Angeles, CAWeb Design Innovatives is a social media marketing firm. The Los Angeles, California-based agency offers Social Media Marketing and Search Engine Optimization.Read More
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742$1,000+50 - 249 employeesLos Angeles, CAFounded in 2018, AMZ Book Publishing Services is a social media marketing firm. The company focuses on Social Media Marketing and Content Marketing, and is midsize.Read More
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743$5,000+50 - 249 employeesLos Angeles, CAThe Design Universe is a branding firm launched in 2020. The team specializes in Branding and Social Media Marketing.Read More
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744Undisclosed50 - 249 employeesLos Angeles, CAWeb 6 Solutions, a social media marketing company, was founded in 2022. The team offers Social Media Marketing and Search Engine Optimization.Read More
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745Undisclosed2 - 9 employeesDavis, CAJDog Enterprises, a web design agency, was launched in 2008. The company offers Web Design and Search Engine Optimization, and is small.Read More
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746$1,000+2 - 9 employeesLos Angeles, CAGKP Maker is a social media marketing firm. Founded in 2020, the team focuses on Social Media Marketing and Search Engine Optimization. The firm is in Los Angeles, California.Read More
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747$5,000+2 - 9 employeesSan Diego, CABloominari is an Advertising company established in 2013. The team specializes in Advertising and Search Engine Optimization.Read More
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SynergyIndustries
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748Undisclosed2 - 9 employeesSalinas, CABranding firm Monterey Park Marketing is headquartered in Salinas, California. They specialize in Branding and Public Relations and were founded in 2023.Read More
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749$5,000+2 - 9 employeesRoseville, CARevenue Source is an Advertising company. Located in Roseville, California, their small team offers Advertising and Web Design. The firm was founded in 2017.Read More
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750$1,000+10 - 49 employeesSan Diego, CACNG Digital Marketing, a Content Marketing company, was established in 2016. The team offers Content Marketing and Pay Per Click.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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