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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211$10,000+10 - 49 employeesCastro Valley, CARead More
Located in Castro Valley, CA, KO Websites is a marketing agency founded in 2001. It specializes in providing traditional customer service with new age marketing skills. Its approximately a dozen employees provide a variety of digital marketing services, including SEO, PPC, social media marketing, web design, digital strategy, email marketing, and conversion optimization.
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212$1,000+2 - 9 employeesLaguna Beach, CARead More
Somnu Medias is a social media marketing company located in Laguna Beach, California and Salt Lake City, Utah. Founded in 2018, the small team specializes in social media marketing, branding, video production, marketing strategy, and more.
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213$10,000+2 - 9 employeesLos Angeles, CABased in Los Angeles, California, Newthink is an e-commerce development firm. The small firm was established in 2004. Their services include e-commerce development, search engine optimization, web design, conversion optimization, and more.Read More
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214$1,000+10 - 49 employeesSan Diego, CARead More
Headquartered in San Diego, California, Client Catch is a PPC agency. Launched in 2021, the small team focuses on pay per click, social media marketing, and search engine optimization.
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215$1,000+2 - 9 employeesVisalia, CARead More
Established in 2008, Chavez Web Design LLC is a web design agency. Working specifically with small businesses, they also provide digital marketing services such as SEO and PPC. Their team of 5 is based in Visalia, California.
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Carpet Cleaning Visalia -
216$1,000+2 - 9 employeesCamarillo, CARead More
Royals Advertising is an advertising agency based in Norfolk, Va. with more than two employees. They have offered advertising, branding, and direct marketing solutions since their founding in 2018. They primarily work with small businesses and startups.
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K.M. Cash RemodelingIndustries
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217$1,000+2 - 9 employeesLos Angeles, CALaV1 is a small SEO agency based in Los Angeles, California. Founded in 1995, the team offers Search Engine Optimization, Artificial Intelligence, Web Design, and Other Digital Marketing.Read More
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218Undisclosed2 - 9 employeesSanta Monica, CARead More
Computaid, a web design company, is headquartered in Santa Monica, California. The small team offers web design, search engine optimization, web development, e-commerce development, and more. The firm was launched in 1984.
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219$1,000+2 - 9 employeesEncinitas, CARead More
SEO services firm Local Blitz is located in San Diego, California; Encinitas, California and Indianapolis, Indiana. The small company was established in 2009. Their services include search engine optimization and pay per click.
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220$1,000+2 - 9 employeesLos Angeles, CACoastal Digital Marketing is a SEO agency founded in 2024. Based in Los Angeles, California, their small team specializes in Search Engine Optimization, Advertising, Social Media Marketing, Content Marketing, and more.Read More
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221$1,000+10 - 49 employeesLos Angeles, CARead More
Located in Los Angeles, California, GIA Studio Marketing Agency is a pay per click agency. They specialize in pay per click, marketing strategy, and search engine optimization and were founded in 2021.
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222$5,000+2 - 9 employeesLong Beach, CAThe SEO Queen is a SEO company. The small Long Beach, California-based firm was founded in 2017. Their team provides search engine optimization, web design, mobile & app marketing, and logo.Read More
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223$5,000+2 - 9 employeesSan Diego, CARead More
Nephila Marketing, Inc., a PPC agency, was established in 2004. In San Diego, California, their small team specializes in pay per click, social media marketing, digital strategy, and search engine optimization.
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Celona.ioIndustries
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224$1,000+10 - 49 employeesMontebello, CASmall SEO company SEO Reforms, is headquartered in Faisalabad, Pakistan and Montebello, California. Established in 2020, the team provides Search Engine Optimization, Social Media Marketing, Web Development, Content Marketing, and more.Read More
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225$1,000+2 - 9 employeesSacramento, CAEstablished in 2022, Advantagy is a small SEO company. Their team focuses on Search Engine Optimization, Pay Per Click, Fractional CMO Services, Web Design, and more. The company is headquartered in Sacramento, California.Read More
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226$10,000+2 - 9 employeesFullerton, CARead More
Internetzone I, Inc. Is a SEO agency. They are headquartered in Fullerton, California and have a small team that focuses on search engine optimization, public relations, and web design. The firm was launched in 1999.
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227$1,000+50 - 249 employeesAlbany, CARead More
ESP Inspire is an e-commerce firm based in Albany, Calif. Founded in 2001, their team of 150 serves clients in the e-commerce, and consumer products sectors. Services include corporate identity, content development, and WooCommerce development.
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228$1,000+2 - 9 employeesSan Francisco, CARead More
Voco Design and Marketing is a San Francisco, California-based graphic design company. The small agency was founded in 2006. Their services include graphic design, web design, print design, branding, and more.
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229$5,000+10 - 49 employeesLaguna Beach, CARead More
Young Company is a B2B advertising agency founded in 1949 and located in Laguna Beach, Calif. With a team of fewer than 50 employees, they offer web design, advertising, market research, and SEO services. Their clientele comprises mostly midmarket businesses in the business services, automotive, and manufacturing industries.
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Accounting for Mortgage BankersIndustries
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230$5,000+10 - 49 employeesEscondido, CARead More
Forum Digital Marketing, a SEO company, was launched in 2015. The agency specializes in search engine optimization, digital strategy, advertising, branding, and more and has a small team. The agency is based in Escondido, California.
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231$1,000+10 - 49 employeesGlendale, CARead More
Azarian Growth Agency is a full-funnel growth agency based in Glendale and Yerevan. Founded in 2020, they have 20 employees that serve startups and businesses by building data-driven growth strategies and engines. Services include but are not limited to Paid Advertising services such as Paid Search Marketing, Facebook and Google Ads Agency, SEO services such as Content Marketing, SEO, Conversion services, and Email Marketing services.
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232$50,000+10 - 49 employeesLos Angeles, CARead More
DG Studio is a global creative agency, founded in 2008 and located in Los Angeles, India, and Mexico. They comprise 26 employees specializing in branding, UX/UI design, web development, graphic design, digital marketing, and app programming. They work with a range of clients, typically in real estate, customer services, and healthcare.
Clients
Los Angeles Medical Center (LAMC) of Cosmetic Surgery -
233$5,000+2 - 9 employeesSan Ramon, CABoomcycle Digital Marketing is a SEO company. They are headquartered in San Ramon, California and Pleasanton, California and have a small team. Their services include Search Engine Optimization, Pay Per Click, Digital Strategy, Social Media Marketing, and more. The firm was established in 2003.Read More
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234$25,000+10 - 49 employeesSan Diego, CARead More
NoMoBo is a San Diego-based software company founded in 2017 with more than 10 members. They specialize in custom software, web, and mobile app development services for small and mid-market firms in industries such as real estate, IT, and utilities.
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HOA MessengerIndustries
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235Undisclosed2 - 9 employeesConcord, CAGrowth Copywriting is a small digital strategy company in Concord, California. They focus on digital strategy, content marketing, affiliate marketing, search engine optimization, and more and were launched in 2021.Read More
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236$10,000+2 - 9 employeesLos Angeles, CARead More
Impactful Agency is a visual design & marketing agency founded in 2019 in Los Angeles with no more than 10 employees. They offer SEO, web design, and web development solutions to clients in the fields of advertising and business services.
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DisneyIndustries
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237$5,000+2 - 9 employeesSan Mateo, CAEstablished in 2016, SEOD Digital Growth Partner is a Content Marketing company. They are based in San Mateo, California and have a small team. The firm specializes in Content Marketing, Digital Strategy, Search Engine Optimization, Email Marketing, and more.Read More
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238$1,000+2 - 9 employeesSacramento, CARead More
LeadChimp is a marketing and advertising agency founded in Sacramento, Calif. with over two members. Founded in 2016, they are experts in social media marketing, PPC ads, and SEO services for small and medium-sized businesses in the field of advertising.
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Esthetic Inknglow LLCIndustries
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239$10,000+50 - 249 employeesLos Angeles, CAWoosper, a PPC agency, was launched in 2020. The midsize team specializes in Pay Per Click, Content Marketing, Search Engine Optimization, and Social Media Marketing. The company is located in Los Angeles, California.Read More
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240$5,000+2 - 9 employeesLa Palma, CARead More
Skyhound Internet is a web design and development firm located in La Palma, Calif. Founded in 1998, Skyhound Internet's small team of 9 employees has over two decades of experience in web development and design. The firm also offers e-commerce development services to its clients. Skyhound Internet primarily works with small and mid-market sized clients from the nonprofit, business services, and e-commerce industries.
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GoodwillIndustries
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