Top 100 SEO Companies in California
The Best of October 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.
List of the Best California SEO Firms
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181$1,000+250 - 999 employeesSanta Clara, CARead More
Milestone Inc is a SEO services firm established in 1998. The midsize Santa Clara, California-based team focuses on search engine optimization, web design, content marketing, and pay per click.
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182$25,000+2 - 9 employeesLos Angeles, CARead More
Web design company Weberous was launched in 2011. Their small team is located in Los Angeles, California. Weberous offers Web Design, E-Commerce Development, Search Engine Optimization, and Web Development.
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Jeffree Star Cosmetics xPrize Feature DisneyIndustries
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183$5,000+10 - 49 employeesSacramento, CARead More
AdInfusion is a internet marketing agency founded in 2010 and headquartered in Sacramento, Calif. Their team of 3 works with small businesses providing content marketing, SEO, conversion optimization, and PPC services to clients; they primarily work with businesses in the business services, advertising, and consumer products industries.
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184$1,000+2 - 9 employeesSanta Maria, CARead More
SocialCatnip is a SEO agency founded in 2015. Their small team is located in Santa Maria, California and focuses on search engine optimization, web design, custom software development, digital strategy, and more.
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185$5,000+2 - 9 employeesSan Francisco, CAConversion Optimization company LoudFace was founded in 2019. Their small team is located in San Francisco, California. Their services include Conversion Optimization, Search Engine Optimization, Web Design, Web Development, and more.Read More
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186$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.
Clients
DisneyIndustries
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187$1,000+10 - 49 employeesSan Ramon, CARead More
KOKONUT Group is a small SEO services firm. Located in San Ramon, California and London, United Kingdom, the company was launched in 2013. Their team provides search engine optimization, pay per click, IT managed services, and application management & support.
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188$5,000+10 - 49 employeesSacramento, CABright Valley Marketing is a PR agency established in 2014. They are headquartered in Sacramento, California and have a small team. The firm focuses on Public Relations, Search Engine Optimization, and Pay Per Click.Read More
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BagitoIndustries
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189Undisclosed2 - 9 employeesMission Viejo, CABare Bones Marketing is a Mobile & App Marketing company in Mission Viejo, California. The small team focuses on Mobile & App Marketing, Search Engine Optimization, Social Media Marketing, Web Design, and more and was launched in 2011.Read More
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190$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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191$1,000+10 - 49 employeesModesto, CAAnjasDev is a SEO company in Modesto, California and Chittagong, Bangladesh. They provide Search Engine Optimization and Social Media Marketing.Read More
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192$5,000+2 - 9 employeesBurbank, CARead More
BEEZ Marketing Agency is a digital marketing firm headquartered in Burbank, Calif., with an additional office in Glendale, Calif. The company was founded in 2017, and has 2 employees who mainly provide SEO, web design, and social media marketing services. They serve small and mid-market businesses in mainly the dental, advertising & marketing, and financial services industries.
Clients
Custom Website Design,Industries
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193$5,000+2 - 9 employeesSan Diego, CARead More
Founded in 2002, The X Concept is a marketing company based in San Diego, Calif. The X Concept's small team of fewer than 5 employees specializes in web design, marketing strategy, and digital strategy. The X Concept works primarily with small business clients in the healthcare, business services, and hospitality industries.
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NeuroserviceIndustries
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194$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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195Undisclosed250 - 999 employeesSan Diego, CATEAM LEWIS, a PR company, is in San Diego, California; Milano, Italy and Chicago, Illinois. The agency offers Public Relations, Digital Strategy, Branding, Social Media Marketing, and more and has a midsize team.The agency was established in 1995.Read More
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196$5,000+10 - 49 employeesSan Diego, CAVideo production agency NANOBOT Group is in San Diego, California and Tallinn, Estonia. The small team provides Video Production, Digital Strategy, Email Marketing, Search Engine Optimization, and more and was established in 2010.Read More
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197$5,000+2 - 9 employeesSanta Monica, CARead More
310 Creative Inc. is a Santa Monica, Calif.-based marketing agency. Founded in 2003, their team of fewer than 10 offers marketing strategy, web design, digital strategy, and conversion optimization services.
Clients
Universal MusicIndustries
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198$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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199$1,000+2 - 9 employeesSan Diego, CADigital Nomad Designs is a web design company. They are based in San Diego, California and have a small team that provides web design, search engine optimization, ux/ui design, conversion optimization, and more. The company was launched in 2018.Read More
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200$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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201$1,000+2 - 9 employeesIrvine, CARead More
Epack Marketing is a social media marketing and SEO company that was founded in 2006. Located in Irvine, Calif., they provide social media marketing, SEO, and email marketing services to clients primarily in the business services and financial services industries. They have about 2 employees.
Clients
henryclarence.comIndustries
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202$1,000+10 - 49 employeesSan Diego, CALaunched in 1999, Straightfire Web Design & Digital Marketing is a small web design agency. Their services include Web Design, Search Engine Optimization, Branding, Print Design, and more. The firm is based in San Diego, California.Read More
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203$5,000+2 - 9 employeesBurbank, CAMK Group, a pay per click agency, is based in Burbank, California. The agency provides Pay Per Click, Search Engine Optimization, Social Media Marketing, Web Design, and more and has a small team.The agency was established in 2020.Read More
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204$1,000+2 - 9 employeesTemecula, CARead More
Second Nature is a marketing firm based in Temecula, Calif., and founded in 2015 with more than two employees. They offer SEO, advertising, and web design solutions to small and mid-market clients in the fields of business and dental services.
Clients
Companion Animal Health and Rehabilitation CenterIndustries
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205$5,000+50 - 249 employeesSanta Clara, CAAdMark Digital Media is a Digital Strategy company. They are in Santa Clara, California and have a midsize team. The company offers Digital Strategy, Social Media Marketing, Mobile & App Marketing, Search Engine Optimization, and more.Read More
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206Undisclosed10 - 49 employeesSan Marcos, CARead More
ChicExecs is a SEO services firm. Established in 2006, the team focuses on search engine optimization, social media marketing, pay per click, other digital marketing, and more. Their small firm is headquartered in San Marcos, California.
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207$1,000+10 - 49 employeesWalnut Creek, CARead More
Single Origin Media, LLC is a web design company based in Walnut Creek, California. The small team offers web design, advertising, branding, graphic design, and more. The company was founded in 2014.
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208$1,000+2 - 9 employeesHuntington Beach, CARead More
Sunday Brunch Agency is a small advertising company founded in 2016. Their services include advertising, branding, social media marketing, email marketing, and more. The firm is based in Huntington Beach, California.
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209$10,000+50 - 249 employeesWest Hollywood, CARead More
SEO company EZ Marketing Tech was established in 2009. The small team offers search engine optimization, pay per click, social media marketing, conversion optimization, and more. The company is in West Hollywood, California.
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210$5,000+10 - 49 employeesIrvine, CARead More
Founded in 2016, PurpleZ is a SEO agency. They are based in Irvine, California and have a small team. Their services include search engine optimization, video production, social media marketing, content marketing, and more.
Industries
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