Top 7 Influencer Marketing Agencies in California (2026)
The top 7 influencer marketing agencies in California for 2026, ranked by Growth Partner Confidence Score with cited public evidence for every pick.
Updated July 27, 2026 · Compiled and reviewed by Growth Partner Index Editorial Desk
This shortlist ranks the 7 highest-scoring influencer marketing agencies working in California, drawn from the 158 agencies currently in the Growth Partner Index. Ranking is by Growth Partner Confidence Score, which is built from public evidence only.
The agencies below are based in Los Angeles, CA, San Francisco, CA, Los Angeles, California, San Francisco, California. Each entry links to a full profile with the score breakdown, the sources behind it, disclosed budget band, and the services the agency actually staffs for.
Use it as a starting shortlist, not a verdict. A high score means the public evidence is strong; it does not mean the agency is the right fit for your budget, category, or measurement maturity.
The shortlist
Ranked by Growth Partner Confidence Score
- 1
Shortform Studio briefs, sources, and edits UGC creators for paid testing on TikTok and Meta, with usage rights bundled.
Full profileVisit website$10k–$50k/mo
- 2
Collectively is an AI-powered creator marketing agency that has contracted over 7,500 creators across 1,700-plus campaigns for brands like Nike and Dove.
Full profileVisit website$250k–$1M/mo
- 3
Open Influence is a global influencer marketing agency that provides full-service creator marketing solutions, including strategy, campaign management, and paid media amplification.
Full profileVisit website$1M+/mo
- 4
Linqia is a leading independent influencer marketing agency in the US, using an AI-powered proprietary technology platform to help enterprise brands scale their influencer strategies and drive meaningful results.
Full profileVisit website$250k–$1M/mo
- 5
Sway Group is a full-service influencer marketing agency with a network of over 50,000 creators, specializing in branded content and digital advertising for diverse brand campaigns.
Full profileVisit website$250k–$1M/mo
- 6
Creator Deck is a women-founded, minority-led agency with 17 years of experience specializing in influencer marketing, social strategy, and community management.
Full profileVisit website$10k–$50k/mo
- 7
Creator Authority is a Santa Monica-based B2B influencer agency founded in 2023 that specializes in LinkedIn creator campaigns as a certified LinkedIn Marketing Partner, with campaigns delivered for brands including Notion, Canva, Dropbox, HubSpot, and The Washington Post.
Full profileVisit website$10k–$50k/mo
How we picked
Agencies qualify for this list by working in influencer marketing and, for location lists, being headquartered in California. Ranking is by Growth Partner Confidence Score, which is built from public, citable evidence only.
Read the full Growth Partner Confidence Score methodology, or submit a correction if something here is wrong.
Frequently asked questions
- Who is the #1 influencer marketing agency in California in 2026?
- Shortform Studio ranks #1 among influencer marketing agencies in California for 2026 with a Growth Partner Confidence Score of 71/100. Shortform Studio is based in Los Angeles, CA and is best suited to brands scaling ugc volume into tiktok and reels before q3. Collectively (70.9/100) ranks second.
- How were these agencies selected?
- Every agency on this list is scored against the same seven-pillar Growth Partner Confidence Score: proof of outcomes, category fit, creative-media integration, reputation, operating maturity, buyer fit, and freshness. Scores are built only from public, citable evidence such as case studies, press, and interviews. Placement cannot be purchased, and sponsored listings are labelled and never re-ranked.
- What should I look for when choosing a influencer marketing agency?
- Look for FTC-compliant disclosure practice, negotiated usage rights, whitelisting or Spark Ads capability, and reporting on cost per acquired customer rather than reach. Beyond that, confirm the budget band matches yours and that the senior operator named in the pitch is the person who will actually run the account.
- How much do influencer marketing agencies charge?
- Most reputable shops want $20k–$50k/mo in total program spend, covering talent fees, paid amplification, and the agency fee. Management fees typically run 15–25% of talent spend. Every profile in this index lists the agency's disclosed budget band so you can filter before the first call.