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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1201$1,000+2 - 9 employeesSacramento, CAFounded in 2020, Bytezero Marketing Inc is a small social media marketing company. Their team specializes in Social Media Marketing and Search Engine Optimization.Read More
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1202$1,000+2 - 9 employeesCoronado, CASan Diego Digital Co., a social media marketing agency, was launched in 2025. The company offers Social Media Marketing and Search Engine Optimization, and is small.Read More
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1203$1,000+2 - 9 employeesBeverly Hills, CALecobyte Web Design Studio is a SEO company. The team provides Search Engine Optimization and Web Design, and the company is located in Beverly Hills, California.Read More
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1204$5,000+2 - 9 employeesDiamond Bar, CANG Technology LLC is a SEO company. The company is headquartered in Diamond Bar, California. Their services include Search Engine Optimization and Web Design.Read More
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1205Undisclosed2 - 9 employeesMission Viejo, CASouth Orange County Web Design, a branding firm, is located in Mission Viejo, California. Their services include Branding and Search Engine Optimization.Read More
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1206$1,000+250 - 999 employeesLos Angeles, CASpark Digital, a SEO agency, was established in 2009. Their midsize team is located in Los Angeles, California; New York, New York; Dallas, Texas and Seattle, Washington and provides search engine optimization, e-commerce development, social media marketing, email marketing, and more.Read More
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1207$1,000+Freelancer employeesChula Vista, CALarkin SEO: White Label, a Content Marketing company, focuses on Content Marketing and Digital Strategy. The firm is located in Spokane, Washington and Chula Vista, California.Read More
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1208$1,000+50 - 249 employeesNovato, CAMidsize website development company WebsXpert, is based in Novato, California. The team specializes in Web Development and Web Design.Read More
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1209$1,000+50 - 249 employeesLos Angeles, CAProficient Logo Designs is a branding firm. They were founded in 2010, and their services include Branding and Digital Strategy.Read More
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1210$5,000+50 - 249 employeesLong Beach, CAWeb design company Grow Tech Solution is in Long Beach, California. Established in 1994, the team focuses on Web Design and Web Development.Read More
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1211$1,000+50 - 249 employeesLos Angeles, CALaunched in 2022, The Website Creatives is a social media marketing firm. The team focuses on Social Media Marketing and Content Marketing.Read More
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1212$1,000+50 - 249 employeesSan Jose, CACambridge Web Experts, a web development company, was established in 2021. The agency offers Web Development and Web Design, and is midsize.Read More
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1213$1,000+50 - 249 employeesLos Angeles, CAEVRR Digital is a branding agency launched in 2015. The firm provides Branding and Social Media Marketing, and is midsize.Read More
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1214Undisclosed50 - 249 employeesMountain View, CALocated in Mountain View, California, Design Mania is a midsize branding firm. Founded in 2015, the team focuses on branding, social media marketing, search engine optimization, web design, and more.Read More
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1215$1,000+50 - 249 employeesSan Francisco, CAHearst Bay Area is a SEO agency. They are located in San Francisco, California and have midsize team of experts. Their services include Search Engine Optimization and Advertising.Read More
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1216Undisclosed50 - 249 employeesSanta Monica, CAAdwest Worldwide, a midsize SEO company, is headquartered in Santa Monica, California. Their services include Search Engine Optimization and Social Media Marketing.Read More
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1217Undisclosed1,000 - 9,999 employeesLos Angeles, CAFounded in 2001, Creative Circle is a large Content Marketing company. Their services include Content Marketing and Search Engine Optimization.Read More
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1218Undisclosed1,000 - 9,999 employeesWest Hollywood, CAEstablished in 2017, Verbit.ai is a large SEO agency. Their team provides Search Engine Optimization and Artificial Intelligence.Read More
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1219Undisclosed2 - 9 employeesMadera, CARead More
greenGabbard is an affiliate marketing company located in Madera, Calif. Founded in 2014, their 2 employees provide SEO, media planning and buying, and affiliate marketing services.
Clients
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1220$5,000+2 - 9 employeesLos Angeles, CAAtomic Studio is a branding agency. The team offers Branding and Email Marketing, and the company is headquartered in Los Angeles, California.Read More
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1221Undisclosed2 - 9 employeesSan Francisco, CAMADE PR is a PR firm. Their small team is in San Francisco, California. Their services include Public Relations and Event Marketing.Read More
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1222$5,000+2 - 9 employeesPerris, CAThe ARRC is an Advertising company. Founded in 2000, the company is located in Perris, California. Their team focuses on Advertising and Content Marketing.Read More
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1223Undisclosed2 - 9 employeesRedlands, CAEstablished in 2018, Marketing 720 is a small Redlands, California-based Advertising company. Their team focuses on Advertising and Media Planning & Buying.Read More
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1224$5,000+2 - 9 employeesFresno, CALikeitsolutions is a Karachi, Pakistan-based web development company. They provide Web Development and Mobile App Development and were established in 2019.Read More
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1225$1,000+2 - 9 employeesVisalia, CALaunched in 2018, DIG Marketing is a social media marketing company. The team offers Social Media Marketing and Web Design.Read More
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1226$1,000+2 - 9 employeesLos Angeles, CABased in Los Angeles, California, Emphasis LA is a Digital Strategy company. They specialize in Digital Strategy and Web Design and were founded in 2017.Read More
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1227$1,000+2 - 9 employeesBeverly Hills, CAHeadquartered in Beverly Hills, California, PIXELS LOGO is a Logo company. Founded in 2009, the team focuses on Logo and UX/UI Design.Read More
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1228$1,000+2 - 9 employeesRiverside, CAFree Logic is a web design company in Riverside, California. They provide Web Design and Branding and were launched in 2018.Read More
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1229$5,000+2 - 9 employeesBeaumont, CAAkrosol LLC is a web development company. Their small team is located in Beaumont, California. Their team focuses on Web Development and Content Marketing.Read More
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1230$1,000+2 - 9 employeesTemecula, CAMarkeitng Meets Technology is an Other Digital Marketing company established in 2020. Their team focuses on Other Digital Marketing and Content Marketing.Read More
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