63 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Williston | 1 | 26,632 | 29,317 | -1.98% | 1,035 | 25.73 | City |
| Tioga | 2 | 2,016 | 2,218 | -1.95% | 596 | 3.38 | City |
| Missouri Ridge township | 3 | 1,643 | 1,609 | 3.14% | 56 | 29.15 | Township |
| Williston township | 4 | 1,113 | 1,086 | 3.15% | 79 | 14.07 | Township |
| Pherrin township | 5 | 943 | 915 | 3.17% | 27 | 35.57 | Township |
| Stony Creek township | 6 | 839 | 815 | 3.33% | 17 | 49.74 | Township |
| Trenton | 7 | 719 | 290 | 7.15% | 687 | 1.05 | CDP |
| Ray | 8 | 706 | 748 | -1.12% | 535 | 1.32 | City |
| Trenton township | 9 | 674 | 655 | 3.22% | 22 | 30.30 | Township |
| Round Prairie township | 10 | 410 | 398 | 3.27% | 8 | 50.59 | Township |
| Judson township | 11 | 380 | 358 | 3.83% | 11 | 35.87 | Township |
| Springbrook township | 12 | 231 | 223 | 3.59% | 7 | 34.81 | Township |
| Truax township | 13 | 227 | 223 | 3.18% | 5 | 49.31 | Township |
| Grenora | 14 | 207 | 224 | -1.43% | 340 | 0.61 | City |
| Pleasant Valley township | 15 | 166 | 164 | 1.84% | 5 | 36.33 | Township |
| Blacktail | 16 | 141 | 23 | 6.82% | 425 | 0.33 | CDP |
| McGregor | 17 | 139 | 95 | 6.92% | 1,103 | 0.13 | CDP |
| Hardscrabble township | 18 | 111 | 109 | 2.78% | 2 | 50.23 | Township |
| Wildrose | 19 | 107 | 114 | -0.93% | 369 | 0.29 | City |
| Twelve Mile township | 20 | 98 | 99 | 2.08% | 2 | 62.23 | Township |
| Blacktail township | 21 | 95 | 89 | 4.4% | 3 | 35.84 | Township |
| Tioga township | 22 | 90 | 90 | 2.27% | 3 | 32.37 | Township |
| Buford township | 23 | 89 | 89 | 2.3% | 3 | 33.78 | Township |
| Sauk Valley township | 24 | 88 | 86 | 2.33% | 2 | 35.59 | Township |
| West Bank township | 25 | 78 | 76 | 2.63% | 2 | 36.57 | Township |
| Epping | 26 | 76 | 83 | -1.3% | 203 | 0.37 | City |
| Dry Fork township | 27 | 74 | 72 | 2.78% | 1 | 54.32 | Township |
| Mont township | 28 | 70 | 67 | 2.94% | 2 | 33.45 | Township |
| Scorio township | 29 | 67 | 67 | 1.52% | 2 | 34.94 | Township |
| Equality township | 30 | 66 | 59 | 6.45% | 2 | 34.83 | Township |
| Tyrone township | 31 | 63 | 60 | 3.28% | 2 | 36.32 | Township |
| Long Creek | 32 | 61 | 52 | 7.02% | 258 | 0.24 | CDP |
| Ray township | 33 | 57 | 57 | 0% | 2 | 35.96 | Township |
| Alamo | 34 | 52 | 54 | 0% | 95 | 0.55 | City |
| Wheelock township | 35 | 49 | 43 | 6.52% | 1 | 36.02 | Township |
| Lindahl township | 36 | 44 | 43 | 2.33% | 1 | 35.64 | Township |
| Athens township | 37 | 43 | 43 | 2.38% | 1 | 35.87 | Township |
| Hazel township | 38 | 40 | 39 | 2.56% | 1 | 35.15 | Township |
| View township | 39 | 40 | 40 | 2.56% | 1 | 35.80 | Township |
| Winner township | 40 | 37 | 37 | 2.78% | 1 | 35.83 | Township |
| Springbrook | 41 | 32 | 32 | 0% | 86 | 0.37 | City |
| Ellisville township | 42 | 32 | 28 | 6.67% | 1 | 35.80 | Township |
| Strandahl township | 43 | 32 | 28 | 6.67% | 1 | 32.52 | Township |
| Good Luck township | 44 | 31 | 31 | 3.33% | 1 | 35.85 | Township |
| Farmvale township | 45 | 28 | 30 | 0% | 1 | 35.83 | Township |
| Oliver township | 46 | 28 | 30 | 0% | 1 | 35.99 | Township |
| Orthell township | 47 | 28 | 21 | 12% | 1 | 35.89 | Township |
| Big Stone township | 48 | 27 | 29 | 0% | 1 | 35.71 | Township |
| South Meadow township | 49 | 27 | 26 | 3.85% | 1 | 35.69 | Township |
| Bonetraill township | 50 | 25 | 24 | 4.17% | 1 | 36.01 | Township |
| Big Meadow township | 51 | 24 | 23 | 4.35% | 1 | 34.88 | Township |
| Barr Butte township | 52 | 23 | 22 | 4.55% | 1 | 35.69 | Township |
| Blue Ridge township | 53 | 23 | 22 | 4.55% | 1 | 33.93 | Township |
| Brooklyn township | 54 | 23 | 20 | 4.55% | 1 | 35.62 | Township |
| East Fork township | 55 | 22 | 21 | 4.76% | 1 | 36.37 | Township |
| Grenora township | 56 | 20 | 19 | 5.26% | 1 | 31.47 | Township |
| Rainbow township | 57 | 20 | 17 | 5.26% | 1 | 35.74 | Township |
| Climax township | 58 | 16 | 11 | 14.29% | 0.00 | 32.84 | Township |
| Champion township | 59 | 13 | 14 | 0% | 0.00 | 35.87 | Township |
| Bull Butte township | 60 | 10 | 11 | 0% | 0.00 | 51.32 | Township |
| Dublin township | 61 | 9 | 10 | 0% | 0.00 | 35.77 | Township |
| New Home township | 62 | 8 | 6 | 14.29% | 0.00 | 36 | Township |
| Rock Island township | 63 | 4 | 4 | 0% | 0.00 | 34.39 | Township |
Williston is the largest city in Williams County, with a population of 26,632.
Rock Island township is the smallest city in Williams County.
There are 63 cities in Williams County, North Dakota.