34 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hallock | 1 | 832 | 894 | -1.19% | 390 | 2 | City |
| Karlstad | 2 | 654 | 705 | -1.21% | 435 | 2 | City |
| Lancaster | 3 | 332 | 356 | -1.19% | 142 | 2 | City |
| Humboldt | 4 | 284 | 281 | 0.35% | 9 | 33 | Township |
| Lake Bronson | 5 | 165 | 179 | -1.2% | 312 | 1 | City |
| Kennedy | 6 | 161 | 176 | -1.23% | 360 | 0 | City |
| Thompson | 7 | 133 | 141 | -0.75% | 4 | 36 | Township |
| Poppleton | 8 | 128 | 136 | -0.78% | 4 | 35 | Township |
| Jupiter | 9 | 103 | 107 | 0% | 3 | 36 | Township |
| Richardville | 10 | 101 | 105 | 0% | 2 | 45 | Township |
| Hazelton | 11 | 97 | 101 | 0% | 3 | 36 | Township |
| Arveson | 12 | 89 | 95 | -1.11% | 3 | 34 | Township |
| Norway | 13 | 88 | 94 | -1.12% | 3 | 35 | Township |
| Hallock | 14 | 83 | 90 | -1.19% | 2 | 34 | Township |
| Teien | 15 | 66 | 69 | 0% | 2 | 29 | Township |
| Granville | 16 | 61 | 64 | 0% | 2 | 34 | Township |
| Halma | 17 | 54 | 59 | -1.82% | 58 | 1 | City |
| St. Vincent | 18 | 48 | 53 | -2.04% | 47 | 1 | City |
| Skane | 19 | 47 | 49 | 0% | 1 | 35 | Township |
| Spring Brook | 20 | 47 | 49 | 0% | 1 | 36 | Township |
| St. Vincent | 21 | 45 | 50 | -2.17% | 1 | 54 | Township |
| Pelan | 22 | 42 | 44 | 0% | 1 | 36 | Township |
| Humboldt | 23 | 38 | 41 | 0% | 342 | 0 | City |
| Svea | 24 | 36 | 38 | 0% | 1 | 36 | Township |
| Percy | 25 | 35 | 37 | 0% | 1 | 35 | Township |
| Caribou | 26 | 33 | 35 | 0% | 1 | 44 | Township |
| Davis | 27 | 32 | 34 | 0% | 1 | 36 | Township |
| Hampden | 28 | 29 | 33 | -3.33% | 1 | 36 | Township |
| Tegner | 29 | 29 | 33 | -3.33% | 1 | 36 | Township |
| Clow | 30 | 26 | 30 | -3.7% | 1 | 45 | Township |
| Hill | 31 | 23 | 24 | 0% | 1 | 32 | Township |
| South Red River | 32 | 20 | 21 | 0% | 1 | 18 | Township |
| Donaldson | 33 | 16 | 18 | 0% | 70 | 0 | City |
| Cannon | 34 | 13 | 14 | 0% | 0.00 | 36 | Township |
Hallock is the largest city in Kittson County, with a population of 832.
Cannon is the smallest city in Kittson County, with a population of 13.
There are 34 cities in Kittson County, Minnesota.