20 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 98366 | Port Orchard | 36,965 |
| 98312 | Bremerton | 36,307 |
| 98370 | Poulsbo | 33,655 |
| 98367 | Port Orchard | 31,756 |
| 98311 | Bremerton | 28,168 |
| 98110 | Bainbridge Island | 24,631 |
| 98310 | Bremerton | 22,643 |
| 98383 | Silverdale | 21,604 |
| 98346 | Kingston | 9,920 |
| 98337 | Bremerton | 7,370 |
| 98315 | Silverdale | 6,112 |
| 98380 | Seabeck | 5,471 |
| 98359 | Olalla | 4,581 |
| 98392 | Suquamish | 2,984 |
| 98340 | Hansville | 2,721 |
| 98342 | Indianola | 1,338 |
| 98314 | Bremerton | 1,186 |
| 98345 | Keyport | 221 |
| 98353 | Manchester | 0 |
| 98364 | Port Gamble | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 20 ZCTAs in Kitsap County, Washington (US Census).