100 Smallest ZIP Codes in the United States by Population in Contra Costa County, California
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Contra Costa County, California.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 94516 | CANYON | CA | 212 |
| 2 | 94569 | PORT COSTA | CA | 251 |
| 3 | 94548 | KNIGHTSEN | CA | 598 |
| 4 | 94528 | DIABLO | CA | 726 |
| 5 | 94575 | MORAGA | CA | 1,048 |
| 6 | 94511 | BETHEL ISLAND | CA | 1,993 |
| 7 | 94514 | BYRON | CA | 2,023 |
| 8 | 94525 | CROCKETT | CA | 3,599 |
| 9 | 94572 | RODEO | CA | 9,309 |
| 10 | 94517 | CLAYTON | CA | 12,349 |
| 11 | 94507 | ALAMO | CA | 14,503 |
| 12 | 94805 | RICHMOND | CA | 14,790 |
| 13 | 94505 | DISCOVERY BAY | CA | 15,445 |
| 14 | 94556 | MORAGA | CA | 15,959 |
| 15 | 94595 | WALNUT CREEK | CA | 17,341 |
| 16 | 94564 | PINOLE | CA | 18,946 |
| 17 | 94563 | ORINDA | CA | 19,416 |
| 18 | 94519 | CONCORD | CA | 20,162 |
| 19 | 94597 | WALNUT CREEK | CA | 23,654 |
| 20 | 94596 | WALNUT CREEK | CA | 23,795 |
| 21 | 94547 | HERCULES | CA | 26,041 |
| 22 | 94598 | WALNUT CREEK | CA | 26,346 |
| 23 | 94530 | EL CERRITO | CA | 26,483 |
| 24 | 94506 | DANVILLE | CA | 26,947 |
| 25 | 94803 | EL SOBRANTE | CA | 27,171 |
| 26 | 94518 | CONCORD | CA | 28,287 |
| 27 | 94549 | LAFAYETTE | CA | 28,456 |
| 28 | 94801 | RICHMOND | CA | 32,759 |
| 29 | 94526 | DANVILLE | CA | 33,396 |
| 30 | 94523 | PLEASANT HILL | CA | 34,964 |
| 31 | 94520 | CONCORD | CA | 36,699 |
| 32 | 94583 | SAN RAMON | CA | 39,758 |
| 33 | 94521 | CONCORD | CA | 41,092 |
| 34 | 94531 | ANTIOCH | CA | 44,115 |
| 35 | 94804 | RICHMOND | CA | 44,387 |
| 36 | 94561 | OAKLEY | CA | 44,546 |
| 37 | 94582 | SAN RAMON | CA | 47,338 |
| 38 | 94553 | MARTINEZ | CA | 49,062 |
| 39 | 94806 | SAN PABLO | CA | 63,730 |
| 40 | 94513 | BRENTWOOD | CA | 67,580 |
| 41 | 94509 | ANTIOCH | CA | 70,889 |
| 42 | 94565 | PITTSBURG | CA | 100,826 |