Contra Costa
California
43
Total ZIPs
1,043,451
Total Population
ZIP Codes in Contra Costa
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 94565 | Pittsburg | 84,641 | 1,088 |
| 94509 | Antioch | 62,439 | 1,472 |
| 94806 | San Pablo | 59,861 | 2,773 |
| 94513 | Brentwood | 54,605 | 278 |
| 94553 | Martinez | 47,065 | 374 |
| 94521 | Concord | 41,249 | 1,228 |
| 94531 | Antioch | 40,290 | 1,421 |
| 94804 | Richmond | 38,559 | 2,406 |
| 94582 | San Ramon | 38,537 | 1,140 |
| 94520 | Concord | 37,208 | 1,465 |
| 94561 | Oakley | 36,515 | 829 |
| 94583 | San Ramon | 34,859 | 901 |
| 94523 | Pleasant Hill | 33,569 | 1,791 |
| 94526 | Danville | 31,102 | 804 |
| 94801 | Richmond | 29,395 | 1,013 |
| 94549 | Lafayette | 26,864 | 540 |
| 94518 | Concord | 26,778 | 1,900 |
| 94598 | Walnut Creek | 25,818 | 655 |
| 94803 | El Sobrante | 24,904 | 823 |
| 94547 | Hercules | 24,092 | 1,708 |
| 94530 | El Cerrito | 23,877 | 1,911 |
| 94506 | Danville | 22,452 | 463 |
| 94597 | Walnut Creek | 20,277 | 2,002 |
| 94596 | Walnut Creek | 20,037 | 1,299 |
| 94519 | Concord | 18,453 | 1,624 |
| 94564 | Pinole | 18,287 | 1,276 |
| 94563 | Orinda | 17,672 | 395 |
| 94595 | Walnut Creek | 16,425 | 1,179 |
| 94556 | Moraga | 15,229 | 481 |
| 94507 | Alamo | 14,889 | 453 |
| 94805 | Richmond | 13,648 | 2,657 |
| 94505 | Discovery Bay | 13,403 | 326 |
| 94517 | Clayton | 12,385 | 84 |
| 94572 | Rodeo | 8,684 | 773 |
| 94525 | Crockett | 3,127 | 513 |
| 94511 | Bethel Island | 2,137 | 158 |
| 94514 | Byron | 1,360 | 18 |
| 94575 | Moraga | 974 | 2,254 |
| 94528 | Diablo | 964 | 159 |
| 94548 | Knightsen | 412 | 58 |
| 94516 | Canyon | 211 | 93 |
| 94569 | Port Costa | 198 | 32 |
| 94850 | Richmond | 0 | — |
All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.