18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| St. Johnsbury | 1 | 7,371 | 7,335 | -0.19% | 202 | 36 | Town |
| Lyndon | 2 | 5,653 | 5,487 | 0.04% | 144 | 39 | Town |
| Hardwick | 3 | 2,955 | 2,913 | -0.44% | 77 | 38 | Town |
| Danville | 4 | 2,345 | 2,330 | -0.47% | 39 | 61 | Town |
| Burke | 5 | 1,641 | 1,644 | -0.12% | 49 | 34 | Town |
| Barnet | 6 | 1,640 | 1,656 | -0.85% | 39 | 42 | Town |
| Waterford | 7 | 1,315 | 1,282 | 0.77% | 34 | 38 | Town |
| Ryegate | 8 | 1,138 | 1,163 | -0.96% | 31 | 37 | Town |
| Groton | 9 | 976 | 982 | -1.01% | 18 | 54 | Town |
| Walden | 10 | 953 | 955 | -0.63% | 25 | 39 | Town |
| Sutton | 11 | 933 | 917 | -0.11% | 24 | 38 | Town |
| Wheelock | 12 | 758 | 756 | -0.66% | 19 | 40 | Town |
| Peacham | 13 | 713 | 713 | -0.42% | 15 | 47 | Town |
| Sheffield | 14 | 680 | 680 | -0.58% | 21 | 33 | Town |
| Kirby | 15 | 586 | 575 | -0.17% | 24 | 25 | Town |
| Newark | 16 | 574 | 584 | -1.03% | 16 | 37 | Town |
| West Burke | 17 | 277 | 277 | 0% | 583 | 0 | Village |
| Stannard | 18 | 216 | 207 | 0.47% | 17 | 13 | Town |
St. Johnsbury is the largest city in Caledonia County, with a population of 7,371.
Stannard is the smallest city in Caledonia County, with a population of 216.
There are 18 cities in Caledonia County, Vermont.