| Zip Code | City | Population ↓ |
|---|---|---|
| 89436 | Sparks | 47,159 |
| 89502 | Reno | 46,412 |
| 89506 | Reno | 45,383 |
| 89431 | Sparks | 40,973 |
| 89521 | Reno | 38,484 |
| 89523 | Reno | 36,538 |
| 89509 | Reno | 36,048 |
| 89503 | Reno | 30,446 |
| 89511 | Reno | 29,038 |
| 89512 | Reno | 28,055 |
| 89433 | Sun Valley | 23,492 |
| 89508 | Reno | 14,596 |
| 89441 | Sparks | 13,025 |
| 89519 | Reno | 9,313 |
| 89451 | Incline Village | 9,176 |
| 89704 | Washoe Valley | 4,644 |
| 89501 | Reno | 3,984 |
| 89439 | Verdi | 1,639 |
| 89510 | Reno | 1,375 |
| 89442 | Wadsworth | 887 |
| 89557 | Reno | 546 |
| 89424 | Nixon | 393 |
| 89402 | Crystal Bay | 171 |
| 89405 | Empire | 162 |
| 89412 | Gerlach | 92 |
| 89450 | Incline Village | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 26 ZCTAs in Washoe County, Nevada (US Census).