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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1$50,000+50 - 249 employeesSan Francisco, CAVictorious is a SEO company. Launched in 2013, the team offers Search Engine Optimization, Content Marketing, and Web Development. Their midsize firm is located in San Francisco, California.Read More
Clients
Agora Wayfair Spotify University of MiamiIndustries
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2$1,000+50 - 249 employeesLos Angeles, CARead More
Launched in 2009, Coalition Technologies is a SEO company. Their midsize team is based in Los Angeles, California; Seattle, Washington and Austin, Texas. Their team specializes in Search Engine Optimization, Pay Per Click, Web Design, and Web Development.
Clients
PayPalIndustries
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3$1,000+250 - 999 employeesSan Diego, CAIgnite Visibility is a San Diego, California-based SEO agency. The firm focuses on Search Engine Optimization, Advertising, Email Marketing, Pay Per Click, and more and is midsize.The firm was launched in 2013.Read More
Clients
Tony Robbins Wawanesa The General Insurance ExperianIndustries
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4$1,000+50 - 249 employeesLos Angeles, CAHawkSEM is a PPC agency launched in 2006. The midsize team focuses on Pay Per Click, Search Engine Optimization, and Social Media Marketing. The agency is located in Los Angeles, California.Read More
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Microsoft Honda DataDog NikeIndustries
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5$1,000+50 - 249 employeesLos Angeles, CALawRank is a SEO services firm. Their midsize team is based in Los Angeles, California and New York, New York. The agency provides Search Engine Optimization, Advertising, Pay Per Click, and Web Design.Read More
Clients
Lorenz & LorenzIndustries
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6$1,000+10 - 49 employeesSan Diego, CASEO services firm NextLeft was launched in 2015. They are located in San Diego, California and Chicago, Illinois and have a small team. NextLeft specializes in Search Engine Optimization, Content Marketing, and Pay Per Click.Read More
Clients
Hallmark Inc.Industries
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7$1,000+50 - 249 employeesSan Diego, CARead More
Titan Growth is a marketing and advertising firm based in San Diego, Calif. and founded in 2004. Titan Growth's team of about 45 employees primarily offers digital strategy services, although it also offers search engine optimization and pay per click services.
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MizunoIndustries
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8$1,000+2 - 9 employeesAnaheim, CASEO agency Zupo was launched in 2019. The firm focuses on Search Engine Optimization and has a small team.Read More
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VincitIndustries
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9$5,000+10 - 49 employeesLa Mirada, CARead More
Wiideman Consulting Group is a marketing and advertising agency founded in 2015. Located in La Mirada, Calif., their team of about 15 employees specializes in providing SEO and marketing strategy services and consulting chiefly to small and medium-sized businesses across various industries. Other services include audits, search engine marketing, and more.
Clients
IHOPIndustries
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10$1,000+250 - 999 employeesAnaheim, CASEO services firm Digital Web Solutions was founded in 2005. The midsize team focuses on search engine optimization, pay per click, web development, and content writing services. The company is based in Newark, Delaware.Read More
Industries
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11$5,000+50 - 249 employeesLos Angeles, CARead More
GR0 is a digital marketing agency founded in 2020 in Los Angeles with over 10 employees. They provide SEO solutions to various clients.
Clients
Advantage Rent A CarIndustries
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12$1,000+50 - 249 employeesGlendale, CALoopex Digital is a SEO agency. The Glendale, California-based agency was established in 2018. The midsize team specializes in Search Engine Optimization.Read More
Clients
Innolytics LLCIndustries
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13$5,000+50 - 249 employeesLos Angeles, CARead More
Launched in 2015, Hennessey Digital is a midsize SEO company. Their services include search engine optimization, pay per click, ux/ui design, content marketing, and more. The company is in Los Angeles, California.
Clients
John Foy & AssociatesIndustries
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14$1,000+10 - 49 employeesLos Angeles, CARead More
Bliss Drive is a digital marketing company based in Los Angeles with a secondary office in Irvine, Calif. Bliss Drive was founded in 2007 and now features a team of about a dozen employees providing SEO, PPC, web design, digital strategy, and conversion optimization services.
Clients
Smart Bean IncIndustries
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15$1,000+50 - 249 employeesSan Diego, CARead More
SEO company iLawyerMarketing was founded in 2006. Based in San Diego, California, their midsize team specializes in search engine optimization, pay per click, and web design.
Industries
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16$1,000+10 - 49 employeesLos Angeles, CARead More
Shoreline Media Marketing is an SEO strategy company based in Asbury Park, N.J., with a secondary location in Los Angeles. Founded in 2010, this company has 10 employees. Services provided by Shoreline Media Marketing include web development, SEO, and marketing automation for small to mid-sized businesses.
Clients
Christensen RecyclingIndustries
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17$5,000+250 - 999 employeesSan Diego, CARead More
Founded in 2012, Power Digital is a social media marketing agency. They are based in San Diego, California; New York, New York and Arlington, Virginia and have a midsize team. Their services include Social Media Marketing, Search Engine Optimization, Pay Per Click, Advertising, and more.
Clients
TOMSIndustries
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18$5,000+2 - 9 employeesManhattan Beach, CABeardog Digital LLC is a small SEO agency. The Manhattan Beach, California-based agency was established in 2023. Their services include Search Engine Optimization, Logo, Social Media Marketing, and Web Design.Read More
Industries
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19$1,000+10 - 49 employeesSan Francisco, CAJives Media is a small SEO company founded in 2012. Their services include Search Engine Optimization, Pay Per Click, Advertising, Branding, and more. The agency is headquartered in San Francisco, California; New York, New York and New York, New York.Read More
Clients
OracleIndustries
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20Undisclosed10 - 49 employeesSimi Valley, CARead More
Bruce Clay, Inc. is a digital marketing agency headquartered in Simi Valley, CA, with additional offices in Switzerland, India, and Japan. The agency and its 85+ employees have experience with social media marketing, PPC, and SEO.
Clients
Pitney Bowes -
21$1,000+10 - 49 employeesThousand Oaks, CARead More
SeoTuners is an SEO company based in Thousand Oaks, Calif. Founded in 2009, this company has 14 employees. SeoTuners exclusively deals in SEO services for small to mid-sized businesses.
Clients
24HourPayrollIndustries
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22$10,000+50 - 249 employeesCarlsbad, CAMidsize web design agency Storm Brain, is headquartered in Carlsbad, California; Costa Mesa, California; Santa Monica, California and New York, New York. Founded in 2007, the team focuses on Web Design, Web Development, Search Engine Optimization, Pay Per Click, and more.Read More
Clients
Nike Chase (JPMorgan Chase & Co.) Citi (Citigroup) TargetIndustries
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23$5,000+2 - 9 employeesAnaheim, CALaunched in 2004, Search Engine Projects is a SEO company. The small team offers Search Engine Optimization, Pay Per Click, Social Media Marketing, and Digital Strategy. The company is based in Anaheim, California; Anaheim, California and Beverly Hills, California.Read More
Clients
Law Firm MarketingIndustries
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24$5,000+10 - 49 employeesIrvine, CARead More
Digital marketing agency Window To Recovery is headquartered in Costa Mesa, Calif. Since 2017, their small team of 2 has been specializing in digital strategy, SEO, web design, advertising, and more.
Clients
Spencer Recovery CentersIndustries
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25$1,000+10 - 49 employeesSan Diego, CASmall SEO company and e-commerce development firm Dog and Rooster, is in San Diego, California. They focus on Search Engine Optimization and E-Commerce Development and were established in 2000.Read More
Clients
TitleistIndustries
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26$1,000+10 - 49 employeesSan Francisco, CARead More
Search Nurture is a full-stack digital marketing agency headquartered in Oakland, California. Founded in 2017, their team of approximately 17 employees serves clients of all sizes, primarily in the business services and retail sectors. Their specialties are SEO, PPC, and digital advertising.
Clients
JergensIndustries
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27$1,000+50 - 249 employeesCosta Mesa, CAPay per click agency KlientBoost is based in Costa Mesa, California; Raleigh, North Carolina and Austin, Texas. The midsize firm was launched in 2015. Their team provides Pay Per Click, Advertising, Social Media Marketing, Conversion Optimization, and more.Read More
Clients
BloombergIndustries
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28$5,000+10 - 49 employeesSan Diego, CARead More
Inseev Interactive is a marketing firm located in San Diego, Calif. and founded in 2013. The firm has about 50 employees. Inseev Interactive specializes in search engine optimization, but also offers pay-per-click services. Many of the firm's clients are midmarket businesses in consumer products industries.
Industries
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29$10,000+10 - 49 employeesSan Diego, CALocated in San Diego, California, WISE Digital Partners is a SEO company. The small team provides Search Engine Optimization, Pay Per Click, Web Design, Web Development, and more and was established in 2016.Read More
Industries
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30$1,000+10 - 49 employeesGlendale, CARead More
SEO American is a SEO firm that’s headquartered in Glendale, Calif and was founded in 2014. The one person firm provides SEO services, web development, and digital strategies to mid market and enterprise companies in the health care, business services, real estate, and dental industries.
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S-Team LAIndustries
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