18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| White River township | 1 | 7,014 | 7,166 | -0.61% | 94 | 74.47 | Township |
| Winchester | 2 | 4,750 | 4,820 | -0.29% | 1,373 | 3.46 | City |
| Wayne township | 3 | 4,279 | 4,354 | -0.51% | 108 | 39.70 | Township |
| Union City | 4 | 3,409 | 3,444 | -0.2% | 1,510 | 2.26 | City |
| Union township | 5 | 1,912 | 1,953 | -0.62% | 27 | 71.52 | Township |
| Parker City | 6 | 1,255 | 1,274 | -0.32% | 2,183 | 0.57 | Town |
| Farmland | 7 | 1,242 | 1,262 | -0.32% | 2,339 | 0.53 | Town |
| Greensfork township | 8 | 1,033 | 1,053 | -0.58% | 22 | 46.04 | Township |
| Ward township | 9 | 1,012 | 1,036 | -0.59% | 28 | 36.75 | Township |
| Green township | 10 | 979 | 989 | -0.31% | 33 | 29.42 | Township |
| Lynn | 11 | 937 | 952 | -0.32% | 1,658 | 0.56 | Town |
| Stoney Creek township | 12 | 858 | 869 | -0.46% | 32 | 26.69 | Township |
| Lynn township | 13 | 813 | 821 | -0.25% | 19 | 43.60 | Township |
| Ridgeville | 14 | 682 | 687 | -0.15% | 1,229 | 0.56 | Town |
| Jackson township | 15 | 534 | 548 | -0.74% | 18 | 30.36 | Township |
| Saratoga | 16 | 225 | 229 | -0.44% | 849 | 0.27 | Town |
| Losantville | 17 | 215 | 219 | -0.46% | 1,138 | 0.19 | Town |
| Modoc | 18 | 159 | 161 | 0% | 1,544 | 0.10 | Town |
White River township is the largest city in Randolph County, with a population of 7,014.
Modoc is the smallest city in Randolph County.
There are 18 cities in Randolph County, Indiana.