Contra Costa County, California ZIP code map by MapSherpa at 1:75,000 scale, with postal boundaries layered over a labeled road network across the East Bay.
What’s on the sheet:
- Every Contra Costa ZIP, color-coded for visual reference
- Major highways and arterials including I-80, I-680, and SR-4 labeled across Concord, Walnut Creek, Richmond, Antioch, and San Ramon
- Neighborhood names, railways, parks, industrial zones, and hospital campuses
Built for East Bay territory planning, courier and home services dispatch, real estate research by postal area, and field marketing across Bay Area suburbs. Order from Map Shop.

