76 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fargo | 1 | 138,859 | 125,986 | 1.89% | 2,732 | 51 | City |
| West Fargo | 2 | 41,558 | 38,901 | 1.29% | 2,569 | 16 | City |
| Horace | 3 | 7,045 | 3,249 | 12.07% | 556 | 13 | City |
| Casselton | 4 | 2,488 | 2,475 | 0.08% | 1,151 | 2 | City |
| Mapleton | 5 | 1,512 | 1,332 | 2.44% | 387 | 4 | City |
| Reed | 6 | 1,170 | 1,083 | 1.65% | 63 | 18 | Township |
| Kindred | 7 | 1,055 | 930 | 2.43% | 728 | 1 | City |
| Reile's Acres | 8 | 901 | 724 | 4.04% | 794 | 1 | City |
| Harwood | 9 | 849 | 796 | 1.19% | 651 | 1 | City |
| Argusville | 10 | 475 | 484 | -0.42% | 119 | 4 | City |
| Pleasant | 11 | 378 | 376 | -0.53% | 11 | 35 | Township |
| Oxbow | 12 | 374 | 378 | -0.27% | 244 | 2 | City |
| Normanna | 13 | 350 | 354 | -0.28% | 10 | 34 | Township |
| Hunter | 14 | 328 | 335 | -0.61% | 220 | 1 | City |
| Arthur | 15 | 324 | 326 | -0.31% | 212 | 2 | City |
| Harwood | 16 | 310 | 301 | 0.32% | 10 | 31 | Township |
| Tower City | 17 | 278 | 267 | 0.72% | 136 | 2 | City |
| Davenport | 18 | 251 | 255 | -0.4% | 923 | 0 | City |
| Leonard | 19 | 244 | 248 | -0.41% | 325 | 1 | City |
| Raymond | 20 | 218 | 226 | -1.36% | 6 | 34 | Township |
| Wheatland | 21 | 200 | 174 | 2.04% | 6 | 36 | Township |
| Grandin | 22 | 197 | 185 | 1.03% | 1,088 | 0 | City |
| Brooktree Park | 23 | 195 | 218 | 7.14% | 1,108 | 0 | CDP |
| Frontier | 24 | 195 | 198 | -0.51% | 1,037 | 0 | City |
| Mapleton | 25 | 193 | 193 | -1.53% | 6 | 34 | Township |
| Buffalo | 26 | 188 | 193 | -0.53% | 391 | 0 | City |
| Page | 27 | 187 | 192 | -0.53% | 186 | 1 | City |
| Davenport | 28 | 183 | 186 | -0.54% | 5 | 36 | Township |
| Walburg | 29 | 139 | 140 | 0% | 4 | 36 | Township |
| Maple River | 30 | 132 | 124 | 1.54% | 4 | 36 | Township |
| Warren | 31 | 130 | 129 | 0% | 4 | 35 | Township |
| Gardner | 32 | 128 | 129 | 0% | 4 | 36 | Township |
| Gardner | 33 | 124 | 129 | -0.8% | 249 | 0 | City |
| Empire | 34 | 120 | 110 | 1.69% | 3 | 36 | Township |
| Tower | 35 | 119 | 117 | -0.83% | 3 | 35 | Township |
| Gill | 36 | 114 | 107 | 0% | 3 | 36 | Township |
| Erie | 37 | 109 | 110 | 0% | 3 | 36 | Township |
| Everest | 38 | 106 | 101 | 2.91% | 3 | 35 | Township |
| Leonard | 39 | 102 | 103 | 0% | 3 | 35 | Township |
| Kinyon | 40 | 101 | 102 | 0% | 3 | 36 | Township |
| Amenia | 41 | 98 | 93 | 2.08% | 3 | 35 | Township |
| Addison | 42 | 95 | 96 | 0% | 3 | 36 | Township |
| Watson | 43 | 94 | 91 | 2.17% | 3 | 36 | Township |
| Highland | 44 | 92 | 93 | 0% | 3 | 36 | Township |
| Eldred | 45 | 90 | 91 | 0% | 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 |
| Durbin | 49 | 86 | 81 | 3.61% | 2 | 35 | Township |
| Casselton | 50 | 85 | 86 | 0% | 3 | 34 | Township |
| Noble | 51 | 81 | 82 | 0% | 3 | 31 | Township |
| Howes | 52 | 79 | 80 | 0% | 2 | 36 | Township |
| Harmony | 53 | 78 | 79 | 0% | 2 | 34 | Township |
| Wheatland | 54 | 72 | 31 | 5.88% | 18 | 4 | CDP |
| Arthur | 55 | 71 | 65 | 0% | 2 | 35 | Township |
| Rich | 56 | 70 | 71 | 0% | 2 | 36 | Township |
| Buffalo | 57 | 69 | 71 | -1.43% | 2 | 36 | Township |
| Hunter | 58 | 68 | 70 | -1.45% | 2 | 34 | Township |
| Ayr | 59 | 67 | 69 | -1.47% | 2 | 36 | Township |
| Clifton | 60 | 67 | 69 | -1.47% | 2 | 35 | Township |
| Wiser | 61 | 62 | 64 | -1.59% | 2 | 34 | Township |
| Erie | 62 | 59 | 29 | 7.27% | 29 | 2 | CDP |
| North River | 63 | 55 | 57 | -1.79% | 902 | 0 | City |
| Briarwood | 64 | 54 | 54 | 0% | 378 | 0 | City |
| Prairie Rose | 65 | 53 | 55 | -1.85% | 1,293 | 0 | City |
| Gunkel | 66 | 52 | 52 | 0% | 1 | 36 | Township |
| Hill | 67 | 52 | 54 | -1.89% | 1 | 36 | Township |
| Page | 68 | 45 | 45 | 0% | 1 | 35 | Township |
| Rochester | 69 | 45 | 45 | 0% | 1 | 36 | Township |
| Bell | 70 | 41 | 41 | 0% | 1 | 36 | Township |
| Cornell | 71 | 41 | 41 | 0% | 1 | 36 | Township |
| Embden | 72 | 40 | 26 | 8.11% | 56 | 1 | CDP |
| Lake | 73 | 34 | 34 | 0% | 1 | 36 | Township |
| Dows | 74 | 33 | 33 | 0% | 1 | 36 | Township |
| Barnes | 75 | 25 | 23 | 0% | 48 | 1 | Township |
| Ayr | 76 | 12 | 12 | 0% | 141 | 0 | City |
Fargo is the largest city in Cass County, with a population of 138,859.
Ayr is the smallest city in Cass County, with a population of 12.
There are 76 cities in Cass County, North Dakota.