Top 100 SEO Companies in California
The Best of June 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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$1,000+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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391$1,000+2 - 9 employeesLos Angeles, CAAB Designs is a SEO agency. Their team is based in Greyton, South Africa and Los Angeles, California and focuses on Search Engine Optimization and Web Design.Read More
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392$1,000+2 - 9 employeesLos Angeles, CASEO company Marketing1on1 is in Los Angeles, California. Their services include Search Engine Optimization and Digital Strategy.Read More
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393Undisclosed2 - 9 employeesTustin, CATustin SEO Services, a SEO agency, is in Tustin, California. Their services include Search Engine Optimization and Web Design.Read More
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394$25,000+10 - 49 employeesCulver City, CAAgency 39A, an IT strategy consulting company, was launched in 2019. The small team focuses on IT strategy consulting and Business Consulting.Read More
Clients
San Ysidro Health Mispro CLSI MustardSeed PMOIndustries
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395$5,000+2 - 9 employeesNewport Beach, CADrofire is an Advertising company. In Seattle, Washington and Newport Beach, California, their small team focuses on Advertising, Branding, Marketing Strategy, Media Planning & Buying, and more. The agency was launched in 2017.Read More
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396$1,000+Freelancer employeesLos Angeles, CAVisionwebppc is a small SEO company based in Los Angeles, California. The team provides Search Engine Optimization.Read More
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397Undisclosed2 - 9 employeesLos Angeles, CASearch engine optimization audit is a SEO agency. Their small team of employees is headquartered in Los Angeles, California. Their team provides Search Engine Optimization.Read More
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398$1,000+2 - 9 employeesSimi Valley, CASimi Valley SEO Agency, a SEO agency, focus on Search Engine Optimization. They were founded in 2022.Read More
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399$1,000+10 - 49 employeesLos Angeles, CABased in Los Angeles, California, Moriarty SEM is a small SEO services firm. The team offers Search Engine Optimization and Account-Based Marketing.Read More
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400$1,000+2 - 9 employeesSan Francisco, CAMap Ranker is a SEO company. Located in San Francisco, California, their team offers Search Engine Optimization.Read More
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401$1,000+50 - 249 employeesSan Jose, CALaunched in 2019, SEO San Jose is a SEO agency. The team specializes in Search Engine Optimization and Mobile App Development.Read More
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402$1,000+2 - 9 employeesSan Francisco, CAMonthlySEOPacks, a SEO agency, was launched in 2025. Located in San Francisco, California, the team offers Search Engine Optimization.Read More
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403$1,000+2 - 9 employeesLos Angeles, CAVerbatim Marketing Agency, a SEO services firm, was founded in 2013. The company focuses on Search Engine Optimization and Conversion Optimization.Read More
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404$1,000+2 - 9 employeesSan Francisco, CAShoutHaus is a SEO company. Located in San Francisco, California, the company was founded in 2018. Their services include Search Engine Optimization and Pay Per Click.Read More
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405$1,000+2 - 9 employeesSan Diego, CARankRabbit SEO is a SEO company. In San Diego, California and Beverly Hills, California, the agency specializes in Search Engine Optimization and Conversion Optimization.Read More
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406$1,000+50 - 249 employeesSanta Ana, CALocated in Santa Ana, California, BrandRep is a SEO agency. They specialize in Search Engine Optimization and Pay Per Click and were established in 2009.Read More
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407$5,000+10 - 49 employeesManteca, CARead More
Social Cali is an email marketing company in Manteca, California. The small team focuses on email marketing, search engine optimization, social media marketing, and web design and was established in 2005.
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408$5,000+2 - 9 employeesRosemead, CARead More
Lab 916 is a SEO agency. Established in 2016, the small firm is in Rosemead, California. Their services include search engine optimization, pay per click, and marketing strategy.
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409Undisclosed2 - 9 employeesSan Diego, CAEstablished in 2006, Krasovetz Consulting is a SEO agency. The team focuses on Search Engine Optimization and Social Media Marketing.Read More
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410$1,000+2 - 9 employeesRancho Cucamonga, CAWeb Market Pros is a small Rancho Cucamonga, California-based SEO company. Their services include Search Engine Optimization and Pay Per Click.Read More
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411$1,000+2 - 9 employeesSan Francisco, CASEO agency Accountants SEO is headquartered in San Francisco, California. The team focuses on Search Engine Optimization and Pay Per Click.Read More
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412$5,000+10 - 49 employeesSanta Monica, CAI Think an Idea is a small SEO agency launched in 2009. Their services include Search Engine Optimization and Digital Strategy.Read More
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413$1,000+2 - 9 employeesSan Francisco, CAFounded in 2012, SF Website Design is a small web design agency located in San Francisco, California and San Francisco, California. Their team offers Web Design and UX/UI Design.Read More
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414$1,000+10 - 49 employeesLos Angeles, CAWeb design company Magma Rank is located in Los Angeles, California. They focus on Web Design and Search Engine Optimization.Read More
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415$1,000+10 - 49 employeesCarlsbad, CARead More
Zö agency is a small Advertising company. The Bend, Oregon-based firm was founded in 2013. Their team focuses on Advertising, Branding, Marketing Strategy, Digital Strategy, and more.
Clients
City of Bend - Houseless in Deschutes addresses misconceptions about the crisis of houselessness and the variety of complex factors that cause people to experience it. City of Medford - Rogue X Recreation Center Superbia - an LGBTQIA+ financial service aimed at making financial services more equitable and inclusive. Deschutes Brewery - we brought five craft beers to life in new markets and demographics.Industries
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416$1,000+50 - 249 employeesLos Angeles, CARead More
Founded in 2010, 180Fusion is a Los Angeles, CA-based digital marketing agency that serves small and enterprise businesses, with a particular focus on the hospitality industry. The team of nearly 50 employees is expert in national and local SEO, PPC, video, social media management, and conversion rate optimization.
Clients
AAMCOIndustries
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417Undisclosed2 - 9 employeesSan Juan Capistrano, CABrooks Internet Marketing is a SEO agency launched in 2016. The team offers Search Engine Optimization and Content Writing Services and is located in San Juan Capistrano, California.Read More
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418Undisclosed2 - 9 employeesSan Francisco, CAPressRoom.ai is a SEO agency. Founded in 2018, the firm is located in San Francisco, California. Their services include Search Engine Optimization and Marketing Strategy.Read More
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419$1,000+2 - 9 employeesOrange, CASEO agency Orangory SEO Agency was established in 2026. The company provides Search Engine Optimization and Pay Per Click.Read More
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420$10,000+10 - 49 employeesSan Jose, CAEstablished in 2022, RankMeTop is a SEO agency. Their team offers Search Engine Optimization and Pay Per Click.Read More
Industries
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