Top 100 SEO Companies in California

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Top 100 SEO Companies in California

The Best of June 2026

Looking 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. 

Jump to Most Reviewed Companies

List of the Best California SEO Firms

  • 391
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Los Angeles, CA
    AB 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.
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    Industries

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  • 392
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Los Angeles, CA
    SEO company Marketing1on1 is in Los Angeles, California. Their services include Search Engine Optimization and Digital Strategy.
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  • 393
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Tustin, CA
    Tustin SEO Services, a SEO agency, is in Tustin, California. Their services include Search Engine Optimization and Web Design.
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  • 394
    (0 Reviews)

    Not yet reviewed.

    $25,000+
    10 - 49 employees
    Culver City, CA
    Agency 39A, an IT strategy consulting company, was launched in 2019. The small team focuses on IT strategy consulting and Business Consulting.
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    Clients

    San Ysidro Health Mispro CLSI MustardSeed PMO

    Industries

  • 395
    (2 Reviews) 5.0

    Timeliness

    4.8

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    2 - 9 employees
    Newport Beach, CA
    Drofire 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.
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    Industries

  • 396
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    Freelancer employees
    Los Angeles, CA
    Visionwebppc is a small SEO company based in Los Angeles, California. The team provides Search Engine Optimization.
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  • 397
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Los Angeles, CA
    Search engine optimization audit is a SEO agency. Their small team of employees is headquartered in Los Angeles, California. Their team provides Search Engine Optimization.
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  • 398
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Simi Valley, CA
    Simi Valley SEO Agency, a SEO agency, focus on Search Engine Optimization. They were founded in 2022.
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  • 399
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Los Angeles, CA
    Based in Los Angeles, California, Moriarty SEM is a small SEO services firm. The team offers Search Engine Optimization and Account-Based Marketing.
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  • 400
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Francisco, CA
    Map Ranker is a SEO company. Located in San Francisco, California, their team offers Search Engine Optimization.
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  • 401
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    San Jose, CA
    Launched in 2019, SEO San Jose is a SEO agency. The team specializes in Search Engine Optimization and Mobile App Development.
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  • 402
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Francisco, CA
    MonthlySEOPacks, a SEO agency, was launched in 2025. Located in San Francisco, California, the team offers Search Engine Optimization.
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    Industries

  • 403
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Los Angeles, CA
    Verbatim Marketing Agency, a SEO services firm, was founded in 2013. The company focuses on Search Engine Optimization and Conversion Optimization.
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    Industries

  • 404
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Francisco, CA
    ShoutHaus 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.
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    Industries

  • 405
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Diego, CA
    RankRabbit 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

    Industries

  • 406
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    Santa Ana, CA
    Located in Santa Ana, California, BrandRep is a SEO agency. They specialize in Search Engine Optimization and Pay Per Click and were established in 2009.
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  • 407
    (14 Reviews) 4.7

    Timeliness

    4.7

    Service Excellence

    4.7

    Value

    4.9

    Would Recommend

    4.7
    $5,000+
    10 - 49 employees
    Manteca, CA

    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
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    2 - 9 employees
    Rosemead, CA

    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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    Industries

  • 409
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    San Diego, CA
    Established in 2006, Krasovetz Consulting is a SEO agency. The team focuses on Search Engine Optimization and Social Media Marketing.
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  • 410
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Rancho Cucamonga, CA
    Web Market Pros is a small Rancho Cucamonga, California-based SEO company. Their services include Search Engine Optimization and Pay Per Click.
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  • 411
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Francisco, CA
    SEO agency Accountants SEO is headquartered in San Francisco, California. The team focuses on Search Engine Optimization and Pay Per Click.
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  • 412
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Santa Monica, CA
    I Think an Idea is a small SEO agency launched in 2009. Their services include Search Engine Optimization and Digital Strategy.
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    Industries

  • 413
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    San Francisco, CA
    Founded 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.
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    Industries

  • 414
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Los Angeles, CA
    Web design company Magma Rank is located in Los Angeles, California. They focus on Web Design and Search Engine Optimization.
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    Industries

  • 415
    (22 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    4.9
    $1,000+
    10 - 49 employees
    Carlsbad, CA

    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.

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    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

  • 416
    (18 Reviews) 4.3

    Timeliness

    4.2

    Service Excellence

    4.2

    Value

    4.3

    Would Recommend

    4.4
    $1,000+
    50 - 249 employees
    Los Angeles, CA

    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.

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    Clients

    AAMCO

    Industries

  • 417
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    San Juan Capistrano, CA
    Brooks 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

    Industries

  • 418
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    San Francisco, CA
    PressRoom.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
  • 419
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Orange, CA
    SEO agency Orangory SEO Agency was established in 2026. The company provides Search Engine Optimization and Pay Per Click.
    Read More

    Industries

  • 420
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    San Jose, CA
    Established in 2022, RankMeTop is a SEO agency. Their team offers Search Engine Optimization and Pay Per Click.
    Read More

    Industries

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