10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Muncie | 1 | 65,063 | 65,107 | -0.01% | 2,374 | 27.40 | City |
| Yorktown | 2 | 11,878 | 11,532 | 0.58% | 372 | 31.93 | Town |
| Chesterfield | 3 | 2,509 | 2,489 | 0.16% | 1,833 | 1.37 | Town |
| Albany | 4 | 2,277 | 2,289 | -0.09% | 1,149 | 1.98 | Town |
| Daleville | 5 | 1,736 | 1,650 | 0.99% | 816 | 2.13 | Town |
| Eaton | 6 | 1,588 | 1,593 | -0.06% | 426 | 3.73 | Town |
| Gaston | 7 | 802 | 797 | 0.13% | 2,203 | 0.36 | Town |
| Selma | 8 | 736 | 746 | -0.27% | 822 | 0.90 | Town |
| Oakville | 9 | 278 | 0 | 7.34% | 1,065 | 0.26 | CDP |
| Blountsville | 10 | 97 | 97 | 0% | 858 | 0.11 | Town |
Muncie is the largest city in Delaware County, with a population of 65,063.
Blountsville is the smallest city in Delaware County.
There are 10 cities in Delaware County, Indiana.