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 — at zero upfront cost.
See Options for Organizations →🏢
I'm a Local Business Looking to Sponsor
Reach Contra Costa County families through youth sports sponsorships — 80% of youth sports parents choose the brand that sponsors their kid's team.
Source: Priority Partnerships / YouGov Sport, 2026
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, as well as organizations 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? +
Nothing upfront. We're commission-only — typically 15–30% of the sponsorship revenue we close for you, scaled to deal size, with renewal rates that decline every season. We work on sponsorships of $1,000 and up. We're paid only on money you actually collect, and your exact rates are in your agreement before we make a single call. See the full commission structure →
Ready to Bring Sponsors to Your Contra Costa County Program?
No upfront cost. No contract term. Just results.