15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Muncie | 1 | 65,375 | 65,100 | 0.08% | 2,386 | 27 | City |
| Center | 2 | 64,907 | 64,461 | 0.28% | 1,882 | 34 | Township |
| Yorktown | 3 | 11,991 | 11,536 | 0.76% | 376 | 32 | Town |
| Harrison | 4 | 3,554 | 3,466 | 0.59% | 84 | 42 | Township |
| Delaware | 5 | 3,532 | 3,475 | 0.46% | 121 | 29 | Township |
| Union | 6 | 2,556 | 2,533 | 0.31% | 87 | 29 | Township |
| Chesterfield | 7 | 2,526 | 2,489 | 0.28% | 1,845 | 1 | Town |
| Albany | 8 | 2,291 | 2,290 | 0% | 1,156 | 2 | Town |
| Daleville | 9 | 1,726 | 1,651 | 0.88% | 811 | 2 | Town |
| Eaton | 10 | 1,594 | 1,593 | 0% | 428 | 4 | Town |
| Perry | 11 | 1,561 | 1,500 | 0.9% | 55 | 28 | Township |
| Niles | 12 | 1,396 | 1,366 | 0.58% | 47 | 29 | Township |
| Gaston | 13 | 808 | 797 | 0.25% | 2,220 | 0 | Town |
| Selma | 14 | 743 | 745 | -0.13% | 830 | 1 | Town |
| Blountsville | 15 | 97 | 97 | 0% | 858 | 0 | Town |
Muncie is the largest city in Delaware County, with a population of 65,375.
Blountsville is the smallest city in Delaware County, with a population of 97.
There are 15 cities in Delaware County, Indiana.