The Contra Costa Market
Why Brands Are Investing Here
Contra Costa County, in the heart of the East Bay, combines dense suburban communities with some of the Bay Area's highest household incomes — a market where local businesses are actively looking for authentic, community-first ways to reach families.
Population
1.16M
Contra Costa County — East Bay, part of the greater San Francisco Bay Area.
Source: California Department of Finance, E-2 County Population Estimates, July 2025
Estimated Youth Sports Participants
101K
Ages 6–17 playing organized sports.
Zubie Five estimate — Census population × ages 6–17 share × Project Play participation rate
Community Reach
303K
Estimated combined reach across participating families, siblings, and spectators.
Zubie Five estimate — participants × 3.0 household factor
Get Started
Whether You Run a Program or a Business
🏟️
I Run a Youth League, School Program, or Nonprofit
Find corporate sponsors for your Contra Costa County organization — jerseys, field signage, tournaments, and more — and put the support back into your kids' season.
See Options for Organizations →🏢
I'm a Local Business Looking to Sponsor
Reach Contra Costa County families through youth sports sponsorships — 67% of youth sports parents say they're more likely to buy from a brand that sponsors their child's team than from one that sponsors a pro team they follow.
See Brand Opportunities → Buying across multiple Bay Area markets? See our regional program →Common Questions
Contra Costa County FAQs
Do you work with organizations throughout Contra Costa County? +
Yes — we work with youth leagues, school athletic departments, and nonprofits across Contra Costa County, including Concord, Walnut Creek, Richmond, and Antioch, with an established track record across Arizona, California, and Nevada and availability nationwide.
What kind of Contra Costa County businesses sponsor youth sports? +
Local restaurants, healthcare providers, auto dealers, real estate agents, and regional brands looking to reach East Bay families all sponsor through Zubie Five.
How much does it cost my organization? +
For youth leagues, high school athletics, and nonprofits, getting started costs nothing, and we're only paid when sponsor money reaches your organization: a flat 20% commission with no seasonal minimum. Pricing for other programs, including bundled city and parks & rec programs, is discussed directly. Everything is in writing before we make a single call, and the full details are open for anyone to read on How We're Paid.
Ready to Bring Sponsors to Your Contra Costa County Program?
Your sponsors, found and handled, so your volunteers can get back to the kids.