18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Adams | 1 | 5,178 | 5,098 | -0.14% | 93 | 56 | Township |
| Marshall | 2 | 4,580 | 4,558 | 0.35% | 126 | 36 | Township |
| Rockville | 3 | 2,608 | 2,510 | 0.73% | 1,748 | 1 | Town |
| Florida | 4 | 2,322 | 2,255 | 0.35% | 48 | 48 | Township |
| Union | 5 | 1,524 | 1,474 | 0.46% | 47 | 33 | Township |
| Reserve | 6 | 1,294 | 1,287 | -0.08% | 52 | 25 | Township |
| Montezuma | 7 | 926 | 923 | 0% | 1,528 | 1 | Town |
| Penn | 8 | 760 | 746 | 0.13% | 32 | 24 | Township |
| Jackson | 9 | 727 | 711 | 0.28% | 20 | 36 | Township |
| Raccoon | 10 | 691 | 678 | 0.14% | 19 | 37 | Township |
| Rosedale | 11 | 656 | 639 | 0.46% | 1,661 | 0 | Town |
| Greene | 12 | 423 | 408 | 0.24% | 12 | 36 | Township |
| Van Bibber Lake | 13 | 415 | 659 | -1.19% | 1,609 | 0 | CDP |
| Howard | 14 | 378 | 373 | -0.26% | 16 | 24 | Township |
| Sugar Creek | 15 | 324 | 313 | 0.31% | 13 | 25 | Township |
| Mecca | 16 | 280 | 270 | 0.72% | 712 | 0 | Town |
| Marshall | 17 | 278 | 271 | 0.36% | 1,086 | 0 | Town |
| Bloomingdale | 18 | 275 | 269 | 0.36% | 473 | 1 | Town |
Adams is the largest city in Parke County, with a population of 5,178.
Bloomingdale is the smallest city in Parke County, with a population of 275.
There are 18 cities in Parke County, Indiana.