72 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fargo | 1 | 141,434 | 125,986 | 1.85% | 2,726 | 52 | City |
| West Fargo | 2 | 42,090 | 38,901 | 1.28% | 2,602 | 16 | City |
| Horace | 3 | 7,804 | 3,249 | 10.77% | 616 | 13 | City |
| Casselton | 4 | 2,491 | 2,475 | 0.12% | 1,152 | 2 | City |
| Mapleton | 5 | 1,548 | 1,332 | 2.38% | 396 | 4 | City |
| Reed | 6 | 1,189 | 1,083 | 1.62% | 64 | 18 | Township |
| Kindred | 7 | 1,080 | 930 | 2.37% | 745 | 1 | City |
| Reile's Acres | 8 | 937 | 724 | 4% | 826 | 1 | City |
| Harwood | 9 | 860 | 796 | 1.3% | 660 | 1 | City |
| Argusville | 10 | 473 | 484 | -0.42% | 118 | 4 | City |
| Pleasant | 11 | 376 | 376 | -0.53% | 11 | 35 | Township |
| Oxbow | 12 | 373 | 378 | -0.27% | 243 | 2 | City |
| Normanna | 13 | 349 | 354 | -0.29% | 10 | 34 | Township |
| Hunter | 14 | 327 | 335 | -0.3% | 219 | 1 | City |
| Arthur | 15 | 324 | 326 | 0% | 212 | 2 | City |
| Harwood | 16 | 311 | 301 | 0.32% | 10 | 31 | Township |
| Tower City | 17 | 280 | 267 | 0.72% | 137 | 2 | City |
| Davenport | 18 | 250 | 255 | -0.4% | 919 | 0 | City |
| Leonard | 19 | 243 | 248 | -0.41% | 324 | 1 | City |
| Raymond | 20 | 215 | 226 | -1.38% | 6 | 34 | Township |
| Wheatland | 21 | 204 | 174 | 2% | 6 | 36 | Township |
| Grandin | 22 | 200 | 185 | 1.52% | 1,105 | 0 | City |
| Frontier | 23 | 195 | 198 | 0% | 1,037 | 0 | City |
| Mapleton | 24 | 190 | 193 | -1.55% | 6 | 34 | Township |
| Buffalo | 25 | 187 | 193 | -0.53% | 389 | 0 | City |
| Page | 26 | 186 | 192 | -0.53% | 185 | 1 | City |
| Davenport | 27 | 182 | 186 | -0.55% | 5 | 36 | Township |
| Walburg | 28 | 139 | 140 | 0% | 4 | 36 | Township |
| Maple River | 29 | 134 | 124 | 1.52% | 4 | 36 | Township |
| Warren | 30 | 130 | 129 | 0% | 4 | 35 | Township |
| Gardner | 31 | 128 | 129 | 0% | 4 | 36 | Township |
| Gardner | 32 | 123 | 129 | -0.81% | 247 | 0 | City |
| Empire | 33 | 122 | 110 | 1.67% | 3 | 36 | Township |
| Tower | 34 | 118 | 117 | -0.84% | 3 | 35 | Township |
| Gill | 35 | 114 | 107 | 0% | 3 | 36 | Township |
| Erie | 36 | 109 | 110 | 0% | 3 | 36 | Township |
| Everest | 37 | 109 | 101 | 2.83% | 3 | 35 | Township |
| Leonard | 38 | 102 | 103 | 0% | 3 | 35 | Township |
| Kinyon | 39 | 101 | 102 | 0% | 3 | 36 | Township |
| Amenia | 40 | 100 | 93 | 2.04% | 3 | 35 | Township |
| Watson | 41 | 96 | 91 | 2.13% | 3 | 36 | Township |
| Addison | 42 | 95 | 96 | 0% | 3 | 36 | Township |
| Highland | 43 | 92 | 93 | 0% | 3 | 36 | Township |
| Eldred | 44 | 90 | 91 | 0% | 3 | 35 | Township |
| Durbin | 45 | 89 | 81 | 3.49% | 3 | 35 | Township |
| Pontiac | 46 | 89 | 90 | 0% | 3 | 35 | Township |
| Rush River | 47 | 89 | 90 | 0% | 2 | 36 | Township |
| Amenia | 48 | 87 | 86 | 0% | 58 | 1 | City |
| Casselton | 49 | 85 | 86 | 0% | 3 | 34 | Township |
| Noble | 50 | 81 | 82 | 0% | 3 | 31 | Township |
| Howes | 51 | 79 | 80 | 0% | 2 | 36 | Township |
| Harmony | 52 | 78 | 79 | 0% | 2 | 34 | Township |
| Arthur | 53 | 71 | 65 | 0% | 2 | 35 | Township |
| Rich | 54 | 70 | 71 | 0% | 2 | 36 | Township |
| Buffalo | 55 | 68 | 71 | -1.45% | 2 | 36 | Township |
| Hunter | 56 | 67 | 70 | -1.47% | 2 | 34 | Township |
| Ayr | 57 | 66 | 69 | -1.49% | 2 | 36 | Township |
| Clifton | 58 | 66 | 69 | -1.49% | 2 | 35 | Township |
| Wiser | 59 | 61 | 64 | -1.61% | 2 | 34 | Township |
| North River | 60 | 55 | 57 | 0% | 902 | 0 | City |
| Briarwood | 61 | 54 | 54 | 0% | 378 | 0 | City |
| Prairie Rose | 62 | 53 | 55 | 0% | 1,293 | 0 | City |
| Gunkel | 63 | 52 | 52 | 0% | 1 | 36 | Township |
| Hill | 64 | 51 | 54 | -1.92% | 1 | 36 | Township |
| Page | 65 | 45 | 45 | 0% | 1 | 35 | Township |
| Rochester | 66 | 45 | 45 | 0% | 1 | 36 | Township |
| Bell | 67 | 41 | 41 | 0% | 1 | 36 | Township |
| Cornell | 68 | 41 | 41 | 0% | 1 | 36 | Township |
| Lake | 69 | 34 | 34 | 0% | 1 | 36 | Township |
| Dows | 70 | 33 | 33 | 0% | 1 | 36 | Township |
| Barnes | 71 | 25 | 23 | 0% | 48 | 1 | Township |
| Ayr | 72 | 12 | 12 | 0% | 141 | 0 | City |
Fargo is the largest city in Cass County, with a population of 141,434.
Ayr is the smallest city in Cass County, with a population of 12.
There are 72 cities in Cass County, North Dakota.