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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121$5,000+2 - 9 employeesSanta Barbara, CARead More
AUQ is a web design company founded in 2018. Their small team is located in Santa Barbara, California. The agency provides web design, search engine optimization, and digital strategy.
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122$1,000+2 - 9 employeesSanta Monica, CARead More
Top Bros is an SEO company based in Los Angeles. Founded in 2010, their team currently consists of 2 employees. They specialize in SEO, PPC, social media marketing, and web design.
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Bergin GlassIndustries
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123$1,000+10 - 49 employeesOakland, CARead More
Rainfactory is a full-service digital marketing agency based in Oakland, Calif., with a secondary location in Seattle. Founded in 2014, this company has 22 employees. Services offered by Rainfactory include social media marketing, PPC, and advertising for small to mid-sized businesses.
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OneWheelIndustries
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124$10,000+10 - 49 employeesLos Angeles, CASmalby is a web design company headquartered in Los Angeles, California and Apex, North Carolina. The small team specializes in Web Design, Search Engine Optimization, and Web Development. The agency was established in 2019.Read More
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125$1,000+10 - 49 employeesSan Diego, CAHeadquarters Digital Marketing, a SEO company, was established in 2019. Their small team is based in San Diego, California. Their services include Search Engine Optimization and Pay Per Click.Read More
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126$1,000+2 - 9 employeesFresno, CARead More
Proactive Online Marketing, a SEO services firm, is in Fresno, California. The small team offers search engine optimization, pay per click, and social media marketing. The company was established in 2007.
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127$1,000+2 - 9 employeesRiverside, CARead More
Raincross is an online marketing agency from Riverside, Calif. that was established in 2012. Their 1 person team provides SEO, PPC, and web design services to companies of all sizes.
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REGENESISIndustries
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128$5,000+2 - 9 employeesSan Diego, CAPPC Force is a PPC company founded in 2021. They are located in San Diego, California and have a small team. Their services include Pay Per Click, Search Engine Optimization, Web Design, and Direct Marketing.Read More
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129$5,000+10 - 49 employeesSan Francisco, CARead More
Thomas Digital Web Design is a web design agency based in San Francisco. The agency, founded in 2010, is a team of less than ten that provides web design, web development, and SEO services to small and midmarket companies.
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California Olive RanchIndustries
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130$10,000+2 - 9 employeesSan Diego, CARead More
Toporin Studio is a web agency based in San Diego with more than two members. Founded in 2016, they offer web design, web development, and SEO solutions for clients in the fields of business services, consumer products, and advertising.
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AirMaxx HVAC, (San Diego, CA)Industries
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131$1,000+2 - 9 employeesSan Diego, CASocial media marketing agency Formula Marketing was launched in 2008. The small team provides social media marketing, content marketing, digital strategy, graphic design, and more. The firm is based in San Diego, California.Read More
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132Undisclosed2 - 9 employeesDublin, CARead More
SevenAtoms is a digital marketing agency in San Francisco, CA. The team of fewer than 10 employees, offers content marketing, pay-per-click (PPC) advertising, SEO, social media, and email marketing to B2B clients. Founded in 2012, SevenAtoms is HubSpot certified and a Google Partner, making them a great resource for companies who use those platforms.
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IncapsulaIndustries
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133$5,000+10 - 49 employeesLos Angeles, CAVisible Factors, a small SEO services firm, is headquartered in Los Angeles, California. They provide Search Engine Optimization, Pay Per Click, Content Marketing, Email Marketing, and more and were founded in 2014.Read More
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Adobe Blue Bottle Coffee Jenni Kayne TicketmasterIndustries
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134$5,000+10 - 49 employeesOakland, CAAdverio - Growth Optimizers is a small PPC agency located in Oakland, California and Greensboro, North Carolina. They offer pay per click, search engine optimization, and business consulting and were established in 2014.Read More
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Crazy Dog T ShirtsIndustries
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135$5,000+10 - 49 employeesSan Diego, CARead More
Digital marketing agency Digitopia was founded in 2004. With headquarters in Carlsbad, Calif., they have a team of 11. They specialize in digital strategy, content marketing, and conversion optimization.
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136$25,000+2 - 9 employeesRedlands, CAFounded in 2016, Hounder is a branding agency. The small Redlands, California-based team focuses on Branding, Search Engine Optimization, Pay Per Click, UX/UI Design, and more.Read More
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137$5,000+2 - 9 employeesLa Crescenta-Montrose, CARead More
Mazeless Enterprise SEO is an SEO agency based in La Crescenta, Calif. with no more than 10 professionals. They have provided SEO and content marketing solutions since their founding in 2019. They work with clients in the industries of legal and business services.
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Allstate Service GroupIndustries
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138$1,000+2 - 9 employeesSan Diego, CARead More
Web Reputation Builders is a boutique web design, web development, SEO and online reputation management firm based in San Diego. Founded in 2009, the small team of five employees provides specialized SEO and web design services.
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139$10,000+10 - 49 employeesSan Jose, CASLIQ BY DESIGN is an Advertising company. Their small team is based in San Jose, California. Their services include Advertising, Branding, Search Engine Optimization, Web Design, and more. The company was established in 2020.Read More
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140$5,000+10 - 49 employeesLos Angeles, CAFounded in 2003, UNINCORPORATED is a small Marketing Strategy company. Their team specializes in Marketing Strategy, Advertising, Graphic Design, Search Engine Optimization, and more. The firm is based in Los Angeles, California.Read More
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Alaska AirlinesIndustries
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141$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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142$1,000+10 - 49 employeesNewark, CARead More
Marketing Wind is an SEO and link-building outreach company with locations in Newark and San Jose, Calif. Founded in 2015 and with about 5 employees, provide SEO, content marketing, and digital strategy to small-scale clients across an array of industries, including business services, consumer products, healthcare, and more.
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Zetronix.comIndustries
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143Undisclosed10 - 49 employeesSacramento, CARead More
Post Modern Marketing is a marketing and web design company based in Sacramento, CA, with offices in San Diego, California, that was established in 2010. Their team of 11 employees offers web design, web development, and SEO services.
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144$1,000+2 - 9 employeesSacramento, CARead More
E. Curtis Designs is a web development company founded in 2002 and located in Sacramento, Calif. With a team of fewer than 10 employees, they offer web development, SEO, social media marketing, web design, and graphic design services. Their clientele includes small businesses in the business services, financial services, and health care and medical industries.
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Lafitte Music CenterIndustries
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145$5,000+10 - 49 employeesNovato, CARead More
Alaniz is a marketing company based just outside San Francisco in Novato, CA. They were founded in 2008 with the goal of helping businesses navigate the choppy waters of the digital ocean, and today fulfill this ideal with transparency, sound strategy, and marketing expertise. Their team of 11 provide services like advertising, web design, SEO, social media, PR, branding, and content marketing.
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Topcon Positioning Systems,Industries
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146$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.
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Universal MusicIndustries
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147$25,000+10 - 49 employeesOakland, CAMangrove Web is a small website development firm. The Oakland, California-based company was established in 2009. Their team provides Web Development, Web Design, Branding, Content Marketing, and more.Read More
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Mighty NetworksIndustries
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148$5,000+2 - 9 employeesLos Angeles, CARead More
A Los Angeles-based digital marketing firm, Nimbus Marketing was founded in 2007. Their team of fewer than 10 employees offers advertising, branding, digital strategy, SEO, and web design services. They cater to small and midmarket businesses in the business services and consumer products industries.
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Aquatech Aquarium ServiceIndustries
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149$1,000+10 - 49 employeesLos Angeles, CALocated in Los Angeles, California, Small Biz Web Design Studio is a SEO agency and web design agency. Founded in 2009, the small team focuses on Search Engine Optimization and Web Design.Read More
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San Jose Home Remodeling by Done Right Home Remodeling,Industries
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150$1,000+10 - 49 employeesGlendale, CASEO services firm DWI was launched in 2020. They are located in Yerevan, Armenia and Glendale, California and have a small team. DWI offers Search Engine Optimization and Web Development.Read More
Industries
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