76 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fargo | 1 | 137,989 | 125,986 | 1.77% | 2,715 | 50.83 | City |
| West Fargo | 2 | 41,403 | 38,895 | 1.23% | 2,560 | 16.18 | City |
| Horace | 3 | 7,239 | 3,249 | 12.39% | 572 | 12.67 | City |
| Casselton | 4 | 2,468 | 2,478 | -0.08% | 1,142 | 2.16 | City |
| Mapleton | 5 | 1,505 | 1,330 | 2.38% | 385 | 3.91 | City |
| Reed township | 6 | 1,151 | 1,084 | 1.23% | 62 | 18.50 | Township |
| Kindred | 7 | 1,086 | 930 | 2.94% | 749 | 1.45 | City |
| Reile's Acres | 8 | 925 | 715 | 4.76% | 815 | 1.14 | City |
| Harwood | 9 | 847 | 797 | 1.19% | 650 | 1.30 | City |
| Argusville | 10 | 467 | 484 | -0.64% | 117 | 4 | City |
| Pleasant township | 11 | 382 | 376 | 0.79% | 11 | 35.49 | Township |
| Oxbow | 12 | 367 | 376 | -0.54% | 240 | 1.53 | City |
| Normanna township | 13 | 345 | 354 | -0.58% | 10 | 34.44 | Township |
| Hunter | 14 | 323 | 333 | -0.62% | 216 | 1.49 | City |
| Arthur | 15 | 322 | 326 | -0.31% | 210 | 1.53 | City |
| Harwood township | 16 | 307 | 301 | 0.33% | 10 | 30.89 | Township |
| Tower City | 17 | 280 | 267 | 1.08% | 137 | 2.05 | City |
| Davenport | 18 | 254 | 254 | 0% | 934 | 0.27 | City |
| Leonard | 19 | 242 | 247 | -0.41% | 322 | 0.75 | City |
| Raymond township | 20 | 221 | 227 | -0.45% | 6 | 34.35 | Township |
| Wheatland township | 21 | 203 | 175 | 3.05% | 6 | 36.11 | Township |
| Grandin | 22 | 201 | 186 | 1.52% | 1,110 | 0.18 | City |
| Brooktree Park | 23 | 195 | 218 | 7.14% | 1,108 | 0.18 | CDP |
| Mapleton township | 24 | 195 | 193 | -0.51% | 6 | 33.59 | Township |
| Frontier | 25 | 191 | 196 | -0.52% | 1,016 | 0.19 | City |
| Page | 26 | 187 | 192 | -0.53% | 186 | 1 | City |
| Buffalo | 27 | 184 | 193 | -1.08% | 383 | 0.48 | City |
| Davenport township | 28 | 182 | 187 | -0.55% | 5 | 35.92 | Township |
| Walburg township | 29 | 135 | 137 | 0% | 4 | 35.98 | Township |
| Maple River township | 30 | 131 | 124 | 1.55% | 4 | 35.65 | Township |
| Gardner township | 31 | 126 | 128 | 0% | 4 | 35.60 | Township |
| Gardner | 32 | 125 | 129 | -0.79% | 252 | 0.50 | City |
| Warren township | 33 | 125 | 127 | -0.79% | 4 | 34.59 | Township |
| Gill township | 34 | 119 | 109 | 1.71% | 3 | 35.96 | Township |
| Tower township | 35 | 119 | 119 | 0% | 3 | 34.59 | Township |
| Empire township | 36 | 118 | 109 | 1.72% | 3 | 35.93 | Township |
| Erie township | 37 | 107 | 111 | -0.93% | 3 | 35.85 | Township |
| Amenia township | 38 | 100 | 95 | 2.04% | 3 | 34.56 | Township |
| Leonard township | 39 | 99 | 103 | -1% | 3 | 35.22 | Township |
| Kinyon township | 40 | 98 | 102 | -1.01% | 3 | 36.01 | Township |
| Everest township | 41 | 95 | 99 | -1.04% | 3 | 34.87 | Township |
| Highland township | 42 | 93 | 94 | 0% | 3 | 35.74 | Township |
| Addison township | 43 | 92 | 96 | -1.08% | 3 | 35.97 | Township |
| Watson township | 44 | 90 | 91 | 0% | 3 | 35.99 | Township |
| Eldred township | 45 | 89 | 90 | 0% | 3 | 35.30 | Township |
| Pontiac township | 46 | 89 | 90 | 0% | 3 | 35.13 | Township |
| Rush River township | 47 | 87 | 88 | 0% | 2 | 36.42 | Township |
| Casselton township | 48 | 85 | 86 | 0% | 3 | 33.84 | Township |
| Amenia | 49 | 83 | 85 | 0% | 56 | 1.49 | City |
| Noble township | 50 | 81 | 82 | 0% | 3 | 31.40 | Township |
| Durbin township | 51 | 80 | 81 | 0% | 2 | 35.07 | Township |
| Harmony township | 52 | 79 | 80 | 0% | 2 | 34.42 | Township |
| Howes township | 53 | 79 | 80 | 0% | 2 | 35.70 | Township |
| Arthur township | 54 | 74 | 64 | 2.78% | 2 | 34.52 | Township |
| Wheatland | 55 | 72 | 31 | 5.88% | 18 | 4.01 | CDP |
| Hunter township | 56 | 71 | 72 | 0% | 2 | 34.35 | Township |
| Rich township | 57 | 70 | 71 | 0% | 2 | 36.08 | Township |
| Buffalo township | 58 | 69 | 70 | 0% | 2 | 35.64 | Township |
| Clifton township | 59 | 68 | 69 | 0% | 2 | 35.12 | Township |
| Wiser township | 60 | 66 | 67 | 0% | 2 | 33.69 | Township |
| Ayr township | 61 | 65 | 66 | 0% | 2 | 36.02 | Township |
| Erie | 62 | 59 | 29 | 7.27% | 29 | 2 | CDP |
| North River | 63 | 55 | 57 | 0% | 902 | 0.06 | City |
| Prairie Rose | 64 | 54 | 56 | 0% | 1,317 | 0.04 | City |
| Briarwood | 65 | 52 | 54 | 0% | 364 | 0.14 | City |
| Gunkel township | 66 | 52 | 53 | 0% | 1 | 36.18 | Township |
| Hill township | 67 | 51 | 52 | 0% | 1 | 35.86 | Township |
| Page township | 68 | 44 | 45 | 0% | 1 | 34.99 | Township |
| Rochester township | 69 | 44 | 45 | 0% | 1 | 36.03 | Township |
| Embden | 70 | 40 | 26 | 8.11% | 56 | 0.72 | CDP |
| Bell township | 71 | 40 | 41 | 0% | 1 | 35.91 | Township |
| Cornell township | 72 | 39 | 40 | 0% | 1 | 36.08 | Township |
| Dows township | 73 | 32 | 35 | -3.03% | 1 | 36.01 | Township |
| Lake township | 74 | 31 | 34 | -3.13% | 1 | 35.96 | Township |
| Barnes township | 75 | 26 | 23 | 4% | 50 | 0.52 | Township |
| Ayr | 76 | 11 | 11 | 0% | 129 | 0.09 | City |
Fargo is the largest city in Cass County, with a population of 137,989.
Ayr is the smallest city in Cass County.
There are 76 cities in Cass County, North Dakota.