28 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mohall | 1 | 722 | 699 | 0.56% | 655 | 1 | City |
| Glenburn | 2 | 423 | 402 | 0.95% | 1,405 | 0 | City |
| Sherwood | 3 | 201 | 189 | 1.01% | 636 | 0 | City |
| Ensign | 4 | 100 | 93 | 2.04% | 3 | 36 | Township |
| Hurley | 5 | 74 | 64 | 5.71% | 2 | 36 | Township |
| Brandon | 6 | 67 | 64 | 1.52% | 2 | 35 | Township |
| Van Buren | 7 | 56 | 53 | 1.82% | 2 | 36 | Township |
| McKinney | 8 | 54 | 51 | 1.89% | 2 | 35 | Township |
| Colquhoun | 9 | 53 | 50 | 1.92% | 1 | 43 | Township |
| White Ash | 10 | 48 | 45 | 2.13% | 1 | 36 | Township |
| Rockford | 11 | 46 | 43 | 2.22% | 1 | 36 | Township |
| Eden Valley | 12 | 45 | 42 | 2.27% | 1 | 43 | Township |
| Tolley | 13 | 43 | 40 | 0% | 344 | 0 | City |
| Clay | 14 | 42 | 39 | 2.44% | 1 | 36 | Township |
| Hamlet | 15 | 42 | 39 | 2.44% | 1 | 36 | Township |
| Grassland | 16 | 36 | 35 | 0% | 1 | 33 | Township |
| Hamerly | 17 | 35 | 34 | 0% | 1 | 36 | Township |
| Stafford | 18 | 35 | 33 | 2.94% | 1 | 43 | Township |
| Fairbanks | 19 | 34 | 33 | 0% | 1 | 36 | Township |
| Muskego | 20 | 33 | 31 | 3.13% | 1 | 32 | Township |
| Prescott | 21 | 33 | 31 | 3.13% | 1 | 36 | Township |
| Callahan | 22 | 28 | 26 | 3.7% | 1 | 31 | Township |
| Plain | 23 | 27 | 23 | 0% | 1 | 36 | Township |
| Prosperity | 24 | 26 | 24 | 4% | 1 | 43 | Township |
| Roosevelt | 25 | 26 | 24 | 4% | 1 | 34 | Township |
| Lockwood | 26 | 25 | 23 | 4.17% | 1 | 36 | Township |
| Ivanhoe | 27 | 20 | 18 | 5.26% | 1 | 36 | Township |
| Grover | 28 | 17 | 15 | 6.25% | 0.00 | 36 | Township |
Mohall is the largest city in Renville County, with a population of 722.
Grover is the smallest city in Renville County, with a population of 17.
There are 28 cities in Renville County, North Dakota.