29 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 |
| St. Johnsbury | 2 | 5,905 | 5,815 | -0.34% | 461 | 13 | CDP |
| Lyndon | 3 | 5,653 | 5,487 | 0.04% | 144 | 39 | Town |
| Hardwick | 4 | 2,955 | 2,913 | -0.44% | 77 | 38 | Town |
| Danville | 5 | 2,345 | 2,330 | -0.47% | 39 | 61 | Town |
| Burke | 6 | 1,641 | 1,644 | -0.12% | 49 | 34 | Town |
| Barnet | 7 | 1,640 | 1,656 | -0.85% | 39 | 42 | Town |
| Waterford | 8 | 1,315 | 1,282 | 0.77% | 34 | 38 | Town |
| Hardwick | 9 | 1,222 | 1,012 | -0.73% | 777 | 2 | CDP |
| Ryegate | 10 | 1,138 | 1,163 | -0.96% | 31 | 37 | Town |
| Groton | 11 | 976 | 982 | -1.01% | 18 | 54 | Town |
| Walden | 12 | 953 | 955 | -0.63% | 25 | 39 | Town |
| Sutton | 13 | 933 | 917 | -0.11% | 24 | 38 | Town |
| Wheelock | 14 | 758 | 756 | -0.66% | 19 | 40 | Town |
| Peacham | 15 | 713 | 713 | -0.42% | 15 | 47 | Town |
| Sheffield | 16 | 680 | 680 | -0.58% | 21 | 33 | Town |
| Groton | 17 | 611 | 569 | 2% | 259 | 2 | CDP |
| Kirby | 18 | 586 | 575 | -0.17% | 24 | 25 | Town |
| Newark | 19 | 574 | 584 | -1.03% | 16 | 37 | Town |
| Danville | 20 | 467 | 398 | 1.3% | 456 | 1 | CDP |
| Lyndon Center | 21 | 369 | 274 | 7.27% | 963 | 0 | CDP |
| Peacham | 22 | 280 | 208 | 7.28% | 182 | 2 | CDP |
| West Burke | 23 | 277 | 277 | 0% | 583 | 0 | Village |
| Sheffield | 24 | 242 | 91 | 7.08% | 376 | 1 | CDP |
| Stannard | 25 | 216 | 207 | 0.47% | 17 | 13 | Town |
| Sutton | 26 | 194 | 199 | 7.18% | 109 | 2 | CDP |
| Lyndon | 27 | 145 | 113 | 7.41% | 609 | 0 | CDP |
| Barnet | 28 | 131 | 147 | 0% | 210 | 1 | CDP |
| East Burke | 29 | 105 | 69 | -0.94% | 199 | 1 | CDP |
St. Johnsbury is the largest city in Caledonia County, with a population of 7,371.
East Burke is the smallest city in Caledonia County, with a population of 105.
There are 29 cities in Caledonia County, Vermont.