Independent list · re-checked September 28, 2026 · published by Primortul LLC

marketing agencies in California

2 of the 13 marketing agencies on this list are based in California (CA), in Los Angeles. The other 11 are based elsewhere on the list. Who leads them, the work they can show, and why each one made the list. This is the list, not a ranking of the state. Nobody pays to be ranked.

  1. 06 on the list · Los Angeles, CA

    Wpromote

    Since 2001 · 201–500 people

    Wpromote is a digital marketing agency founded in 2001 by Mike Mothner while at Dartmouth and now headquartered in Los Angeles with offices in Chicago and New York. It runs media, creative, data and strategy for brands such as Intuit QuickBooks, Southwest Airlines and Peacock, and in late 2025 acquired creative agency Giant Spoon. The company is privately held with backing from ZMC.

    Why it’s hereSeven-time Ad Age Best Place to Work and a four-time Search Engine Land Agency of the Year, with roughly 500 staff.

    Who leads itMike Mothner, Founder & CEO.

    Estimated cost

    Estimated: $8,000–$25,000/mo, typical for US marketing retainers; not a quote.

    Typical industry estimate, not a quote from any firm on this list.

    performance media · paid search and social · data and analytics · creative

  2. 11 on the list · Los Angeles, CA

    Zambezi

    Since 2006

    Zambezi is an independent, women-owned creative agency in Los Angeles founded in 2006 by former Wieden+Kennedy staff. It began in sports marketing and now handles integrated creative, digital and production for consumer brands such as TaylorMade, Autotrader and The Venetian. CEO Jean Freeman is the agency's majority owner.

    Why it’s hereAd Age Small Agency of the Year in 2011 and 2016 and one of the largest woman-owned agencies in the country.

    Who leads itJean Freeman, CEO.

    Estimated cost

    Estimated: $8,000–$25,000/mo, typical for US marketing retainers; not a quote.

    Typical industry estimate, not a quote from any firm on this list.

    creative · integrated campaigns · sports and consumer brands · women-owned

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