28 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mohall | 1 | 727 | 699 | 0.69% | 659 | 1 | City |
| Glenburn | 2 | 427 | 402 | 0.95% | 1,419 | 0 | City |
| Sherwood | 3 | 204 | 189 | 1.49% | 646 | 0 | City |
| Ensign | 4 | 102 | 93 | 2% | 3 | 36 | Township |
| Hurley | 5 | 78 | 64 | 5.41% | 2 | 36 | Township |
| Brandon | 6 | 68 | 64 | 1.49% | 2 | 35 | Township |
| Van Buren | 7 | 57 | 53 | 1.79% | 2 | 36 | Township |
| McKinney | 8 | 55 | 51 | 1.85% | 2 | 35 | Township |
| Colquhoun | 9 | 54 | 50 | 1.89% | 1 | 43 | Township |
| White Ash | 10 | 49 | 45 | 2.08% | 1 | 36 | Township |
| Rockford | 11 | 47 | 43 | 2.17% | 1 | 36 | Township |
| Eden Valley | 12 | 46 | 42 | 2.22% | 1 | 43 | Township |
| Tolley | 13 | 44 | 40 | 2.33% | 352 | 0 | City |
| Clay | 14 | 43 | 39 | 2.38% | 1 | 36 | Township |
| Hamlet | 15 | 43 | 39 | 2.38% | 1 | 36 | Township |
| Grassland | 16 | 36 | 35 | 0% | 1 | 33 | Township |
| Stafford | 17 | 36 | 33 | 2.86% | 1 | 43 | Township |
| Hamerly | 18 | 35 | 34 | 0% | 1 | 36 | Township |
| Fairbanks | 19 | 34 | 33 | 0% | 1 | 36 | Township |
| Muskego | 20 | 34 | 31 | 3.03% | 1 | 32 | Township |
| Prescott | 21 | 34 | 31 | 3.03% | 1 | 36 | Township |
| Callahan | 22 | 29 | 26 | 3.57% | 1 | 31 | Township |
| Plain | 23 | 27 | 23 | 0% | 1 | 36 | Township |
| Prosperity | 24 | 27 | 24 | 3.85% | 1 | 43 | Township |
| Roosevelt | 25 | 27 | 24 | 3.85% | 1 | 34 | Township |
| Lockwood | 26 | 26 | 23 | 4% | 1 | 36 | Township |
| Ivanhoe | 27 | 21 | 18 | 5% | 1 | 36 | Township |
| Grover | 28 | 18 | 15 | 5.88% | 1 | 36 | Township |
Mohall is the largest city in Renville County, with a population of 727.
Grover is the smallest city in Renville County, with a population of 18.
There are 28 cities in Renville County, North Dakota.