32 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Barre | 1 | 8,327 | 8,476 | -0.36% | 2,089 | 3.99 | City |
| Barre town | 2 | 8,081 | 7,923 | 0.27% | 264 | 30.57 | Town |
| Montpelier | 3 | 7,938 | 8,070 | -0.33% | 789 | 10.06 | City |
| Northfield town | 4 | 5,943 | 5,909 | 0.07% | 133 | 44.63 | Town |
| Waterbury town | 5 | 5,516 | 5,326 | 0.53% | 115 | 48.15 | Town |
| Northfield | 6 | 5,487 | 4,413 | 7.13% | 2,255 | 2.43 | CDP |
| Berlin town | 7 | 2,920 | 2,852 | 0.31% | 81 | 36.04 | Town |
| East Montpelier town | 8 | 2,630 | 2,596 | 0.34% | 83 | 31.75 | Town |
| Waterbury | 9 | 2,108 | 1,857 | 7.17% | 1,632 | 1.29 | CDP |
| Warren town | 10 | 1,979 | 1,974 | -0.15% | 49 | 40.08 | Town |
| Waitsfield town | 11 | 1,913 | 1,835 | 1% | 74 | 25.75 | Town |
| Middlesex town | 12 | 1,826 | 1,779 | 0.33% | 46 | 39.49 | Town |
| Moretown town | 13 | 1,744 | 1,748 | -0.29% | 44 | 39.71 | Town |
| Calais town | 14 | 1,677 | 1,666 | 0.12% | 44 | 37.93 | Town |
| Marshfield town | 15 | 1,563 | 1,581 | -0.19% | 36 | 43.31 | Town |
| Cabot town | 16 | 1,486 | 1,438 | 0.61% | 40 | 37.14 | Town |
| Duxbury town | 17 | 1,460 | 1,414 | 0.62% | 34 | 42.97 | Town |
| Fayston town | 18 | 1,429 | 1,367 | 0.7% | 39 | 36.51 | Town |
| South Barre | 19 | 1,398 | 1,110 | 0.87% | 721 | 1.94 | CDP |
| Plainfield town | 20 | 1,243 | 1,237 | -0.24% | 59 | 21 | Town |
| East Barre | 21 | 1,213 | 807 | 2.1% | 463 | 2.62 | CDP |
| Worcester town | 22 | 969 | 965 | 0.1% | 25 | 38.56 | Town |
| Woodbury town | 23 | 949 | 926 | 0.64% | 25 | 37.72 | Town |
| Plainfield | 24 | 437 | 415 | 0.46% | 924 | 0.47 | CDP |
| Graniteville | 25 | 413 | 907 | -5.71% | 242 | 1.71 | CDP |
| Cabot | 26 | 340 | 228 | 7.26% | 274 | 1.24 | CDP |
| Waterbury Center | 27 | 326 | 211 | 7.24% | 751 | 0.43 | CDP |
| Marshfield | 28 | 263 | 268 | -0.38% | 1,019 | 0.26 | Village |
| Waitsfield | 29 | 244 | 238 | 2.09% | 373 | 0.66 | CDP |
| Websterville | 30 | 174 | 380 | -12.56% | 86 | 2.02 | CDP |
| Worcester | 31 | 116 | 106 | 0% | 959 | 0.12 | CDP |
| East Montpelier | 32 | 79 | 82 | 6.76% | 332 | 0.24 | CDP |
Barre is the largest city in Washington County, with a population of 8,327.
East Montpelier is the smallest city in Washington County.
There are 32 cities in Washington County, Vermont.