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.
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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151$5,000+10 - 49 employeesLos Angeles, CARead More
Founded in 2015, Big Bang Marketing is located in Woodland Hils, Calif. With about 10 employees, they provide SEO, PPC, and social media marketing services for midmarket and small businesses.
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All About Smile Dental Group -
152$1,000+10 - 49 employeesCerritos, CARead More
ECF Marketing is a small SEO company. Founded in 2009, the team focuses on search engine optimization, web design, conversion optimization, and pay per click. The agency is headquartered in Cerritos, California.
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153$1,000+10 - 49 employeesSan Diego, CARead More
Founded in 2017, The Agency Engine is a other digital marketing company. Based in , their small team specializes in other digital marketing.
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154$1,000+2 - 9 employeesFullerton, CASEO services firm Search Business Group was established in 1998. They are headquartered in Fullerton, California; Quito, Ecuador and West Hollywood, California and have a small team. Search Business Group offers Search Engine Optimization, Content Marketing, Web Design, Generative AI, and more.Read More
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Brookhurst Animal Medical CenterIndustries
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155$5,000+10 - 49 employeesSan Francisco, CAPrevisible, a SEO agency, was launched in 2020. They are in San Francisco, California and have a small team. Previsible focuses on search engine optimization.Read More
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156$5,000+2 - 9 employeesSan Francisco, CARead More
Razorfrog Web Design is a website development shop located in San Francisco, CA. Founded in 2008, Razorfrog's team of nearly 10 people specialize in WordPress web design and maintenance. They also offer logo, print, and graphic design, as well as SEO services. RazorFrog works with clients in the business, real estate, and legal industries.
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KZSC RadioIndustries
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157$5,000+10 - 49 employeesCalabasas, CARead More
Pay per click agency Avita Group is located in Calabasas, California. The small team focuses on pay per click, search engine optimization, digital strategy, conversion optimization, and more. The company was founded in 2003.
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158$10,000+2 - 9 employeesSanta Clarita, CARead More
95Visual is a web development firm based in Los Angeles. Their small team of 3 has specialized in web and custom software development for small and midmarket businesses alike since its establishment in 2008.
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UC Santa BarbaraIndustries
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159Undisclosed10 - 49 employeesLos Angeles, CAEstablished in 2010, One Two SEO is a social media marketing company. The firm provides social media marketing, search engine optimization, digital strategy, content marketing, and more and has a small team. The firm is based in Los Angeles, California.Read More
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160$5,000+2 - 9 employeesSan Diego, CARead More
Nomad SEO, a SEO company, is located in San Diego, California. The small team offers search engine optimization and was launched in 2017.
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161$5,000+10 - 49 employeesLos Angeles, CARead More
JourneyEngine Inc is an SEO agency based in Los Angeles. Their team of more than 10 provides content marketing, digital strategy, and SEO solutions for clients in the fields of business services, advertising, and education.
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Sony Pictures EntertainmentIndustries
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162$1,000+10 - 49 employeesSan Diego, CARead More
OPTYO is a branding firm. Established in 2018, the small firm is headquartered in San Diego, California. Their services include branding, social media marketing, affiliate marketing, search engine optimization, and more.
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Hero BarbellIndustries
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163$1,000+2 - 9 employeesBurbank, CAAmplitude Digital is an advertising company. They are headquartered in Los Angeles, California and have a small team that focuses on advertising, social media marketing, conversion optimization, search engine optimization, and more. The firm was founded in 2004.Read More
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Sony -
164$25,000+10 - 49 employeesCarlsbad, CARead More
Founded in 2006, Mancuso Media is an advertising company. They are located in Carlsbad, California and have a small team. Their services include advertising, media planning & buying, pay per click, search engine optimization, and more.
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Evans Tire & Service CentersIndustries
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165$5,000+10 - 49 employeesMammoth Lakes, CARead More
Headquartered in Mammoth Lakes, California, Chosen Data is a SEO agency. They focus on search engine optimization and were founded in 2019.
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166Undisclosed10 - 49 employeesSausalito, CARead More
Headquartered in Sausalito, Calif., WebSight Design is a web development company with a small team of 13 employees. Founded in 1995, WebSight Design specializes in web development, web design, and e-commerce development.With WebSight Design's assistance, the real estate client's blog traffic has increased 100 percent year over year, and their website traffic typically increases 20 to 25 percent each year.
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Hard Rock Hotel & CasinoIndustries
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167$5,000+1,000 - 9,999 employeesSan Jose, CARead More
ExpertsFromIndia is a development company based in San Jose, Calif. They were founded in 2003 and have a team of around 800 employees. They primarily provide custom software development and SEO.
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eBayIndustries
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168$1,000+10 - 49 employeesSan Diego, CASEO services firm LIVID Digital Strategy Agency is based in San Diego, California and Canggu, Indonesia. The small team specializes in search engine optimization, digital strategy, and social media marketing. The agency was launched in 2018.Read More
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169$5,000+2 - 9 employeesCalabasas, CARead More
LookinLA is a Los Angeles based online marketing agency. They were founded in 2017 and have a team of 4 employees. They specialize in content marketing, digit strategy and SEO.
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PeopleG2Industries
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170$1,000+2 - 9 employeesSan Jose, CALocated in San Jose, California, Ranking Rooster is a SEO services firm. The small team offers search engine optimization and was established in 2020.Read More
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171$1,000+10 - 49 employeesFremont, CARead More
Embtel Solutions is a PPC company. They offer pay per click, search engine optimization, social media marketing, web design, and more and were launched in 2014. Their small team is located in Fremont, California.
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172$1,000+50 - 249 employeesLos Angeles, CARead More
Launched in 2012, Baymediasoft Technologies is a midsize web development firm. Their services include web development, mobile app development, ux/ui design, web design, and more. The firm is headquartered in Los Angeles, California and Udaipur, India.
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173$5,000+10 - 49 employeesLos Angeles, CAVermillion Tech is a social media marketing agency and website development company. Their small team is headquartered in Surat, India. The firm specializes in social media marketing and web development. The firm was established in 2023.Read More
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V&V JeweldiamIndustries
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174$5,000+2 - 9 employeesThousand Oaks, CARead More
Streamline Results is a digital marketing agency with approximately 5 employees, based in Thousand Oaks, Calif. Founded in 2008, Streamline Results has assisted over 1,000 clients with their SEO, social media marketing, and conversion optimization.Streamline Results helped the client reduce their website's bounce rate, attract 10-12,000 page views per month, and receive 15-25 cold calls from qualified leads daily.
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PromescentIndustries
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175$5,000+2 - 9 employeesLos Angeles, CASEO company Kretz Consulting is headquartered in Los Angeles, California. They provide Search Engine Optimization, AI Consulting, Generative AI, and Digital Strategy and were launched in 2022.Read More
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176$5,000+10 - 49 employeesCalabasas, CARead More
Symphonic Digital is a PPC agency in Los Angeles, California. The small agency was established in 2013. Their services include pay per click, social media marketing, search engine optimization, conversion optimization, and more.
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177$1,000+2 - 9 employeesLos Angeles, CARead More
Founded in 2015, 405 Ads is a full service digital marketing and SEO company who works with small, midmarket, and enterprise companies in the consumer products, health care, non-profit, automotive, and legal industries. With two offices in Calif., a team of 10 specialize in SEO and PPC advertising for client projects.
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Law Offices of John D. RodgersIndustries
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178$1,000+2 - 9 employeesCarlsbad, CARead More
Adaptia is a web services agency based in Carlsbad, Calif. with more than two experts. Founded in 2010, they provide branding, digital strategy, and SEO solutions for small and mid-market firms in the fields of e-commerce, retail, and media.
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DisneyIndustries
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179$5,000+2 - 9 employeesLos Angeles, CARead More
Bullfrog Creative Agency is an event marketing & planning company. The small Canton, Georgia-based team offers event marketing & planning, public relations, branding, social media marketing, and more. The firm was launched in 2020.
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180$10,000+2 - 9 employeesLos Angeles, CARead More
Specto Design is a design agency based in Los Angeles, California, that was established in 2001. Their team of fewer than 10 employees offers UX/UI design and web design services.
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Altadena DairyIndustries
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