Top 100 SEO Companies in California
The Best of September 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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1291$1,000+2 - 9 employeesArtesia, CALocated in Artesia, California and Noida, India, DIGITAL WIZARDS SOLUTIONS LLC is a social media marketing agency. Their services include Social Media Marketing and Search Engine Optimization.Read More
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1292Undisclosed2 - 9 employeesLos Angeles, CAEstablished in 2024, Nexus Digital Marketing Agency is a branding company. The team provides Branding and Social Media Marketing.Read More
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1293$1,000+2 - 9 employeesMilpitas, CAIOTTAA is a Milpitas, California-based branding company. They specialize in Branding and Search Engine Optimization and were established in 2017.Read More
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1294$1,000+2 - 9 employeesPalm Springs, CAStudio66 is a branding company. Their small team is in Palm Springs, California and focuses on Branding and Search Engine Optimization. The agency was founded in 2023.Read More
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1295$1,000+2 - 9 employeesGlendale, CAAtmos Digital LLC is a branding agency. Their small team is located in Glendale, California and specializes in Branding and Social Media Marketing. The firm was established in 2023.Read More
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1296Undisclosed2 - 9 employeesLaguna Beach, CAStudio 22 Media is a Laguna Beach, California-based social media marketing firm. They focus on Social Media Marketing and Search Engine Optimization.Read More
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1297$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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1298$1,000+2 - 9 employeesBeverly Hills, CAFounded in 2025, Lecobyte is a SEO services firm. Their services include Search Engine Optimization and Web Design.Read More
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1299$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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1300Undisclosed2 - 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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1301$5,000+2 - 9 employeesSan Diego, CASocial media marketing agency Eddie Signaigo Digital was established in 2015. Located in San Diego, California, the team focuses on Social Media Marketing and Content Marketing.Read More
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1302$1,000+2 - 9 employeesPasadena, CAWebXNest is a web design agency founded in 2020. The agency provides Web Design and Search Engine Optimization.Read More
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1303$1,000+2 - 9 employeesValencia, CAS4L (Sites4Logistics) is a web design company. Their team is based in Valencia, California and provides Web Design and Digital Strategy.Read More
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1304$1,000+2 - 9 employeesSacramento, CALaunched in 2025, obtAInium Agency is a Content Marketing company. Their services include Content Marketing and Generative AI.Read More
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1305Undisclosed2 - 9 employeesIrvine, CAZyntax is a SEO services firm. Established in 2024, the team specializes in Search Engine Optimization and Web Design.Read More
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1306$10,000+2 - 9 employeesSan Francisco, CABoards of Growth is a SEO company. The San Francisco, California-based agency was established in 2020. Their team offers Search Engine Optimization and Pay Per Click.Read More
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1307$1,000+2 - 9 employeesLos Angeles, CASwitchboard Media is a Los Angeles, California-based social media marketing company. Established in 2024, the team provides Social Media Marketing and Web Design.Read More
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1308$1,000+2 - 9 employeesLos Angeles, CACited is a small Generative AI company. Established in 2025, the team focuses on Generative AI and Search Engine Optimization.Read More
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1309$1,000+2 - 9 employeesAtascadero, CAHammerScript is a Content Marketing company. Their small team is located in Atascadero, California. Their services include Content Marketing and Search Engine Optimization.Read More
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1310$1,000+2 - 9 employeesIrvine, CAKrylane Studio is an artificial intelligence firm. They were founded in 2024 and provide Artificial Intelligence and Search Engine Optimization.Read More
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1311$5,000+2 - 9 employeesLos Angeles, CAIndigo Mars Agency is a Content Marketing company. Launched in 2026, the team focuses on Content Marketing and Digital Strategy. The company is located in Los Angeles, California.Read More
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1312$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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1313$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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1314$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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1315$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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1316$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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1317$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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1318$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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1319$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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1320Undisclosed50 - 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
Industries
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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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