18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Reno | 1 | 285,895 | 264,146 | 1.48% | 2,623 | 109 | City |
| Reno | 2 | 285,895 | 264,990 | 1.48% | 2,623 | 109 | City |
| Sparks | 3 | 112,178 | 108,459 | 0.59% | 3,074 | 36 | City |
| Sparks | 4 | 112,178 | 108,886 | 0.59% | 3,074 | 36 | City |
| Sun Valley | 5 | 23,644 | 21,179 | 1.24% | 1,622 | 15 | CDP |
| Spanish Springs | 6 | 16,756 | 15,820 | 0.67% | 302 | 56 | CDP |
| Cold Springs | 7 | 11,650 | 10,704 | 1.81% | 1,330 | 9 | CDP |
| Incline Village | 8 | 9,259 | 9,160 | 0.35% | 430 | 22 | CDP |
| Lemmon Valley | 9 | 5,266 | 5,183 | 0.29% | 330 | 16 | CDP |
| Washoe Valley | 10 | 3,289 | 2,724 | 0.55% | 653 | 5 | CDP |
| Mogul | 11 | 1,321 | 1,308 | 0.15% | 909 | 1 | CDP |
| Golden Valley | 12 | 1,091 | 1,085 | -2.76% | 302 | 4 | CDP |
| Verdi | 13 | 1,064 | 1,161 | -2.12% | 321 | 3 | CDP |
| Wadsworth | 14 | 686 | 787 | -1.44% | 185 | 4 | CDP |
| Nixon | 15 | 341 | 325 | -0.87% | 54 | 6 | CDP |
| Sutcliffe | 16 | 301 | 306 | 1.35% | 30 | 10 | CDP |
| Crystal Bay | 17 | 154 | 179 | -6.1% | 341 | 0 | CDP |
| Empire | 18 | 148 | 103 | -3.27% | 29 | 5 | CDP |
Reno is the largest city in Washoe County, with a population of 285,895.
Empire is the smallest city in Washoe County, with a population of 148.
There are 18 cities in Washoe County, Nevada.