15 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Muncie | 1 | 65,430 | 65,100 | 0.08% | 2,388 | 27 | City |
| Center | 2 | 65,089 | 64,461 | 0.28% | 1,888 | 34 | Township |
| Yorktown | 3 | 12,082 | 11,536 | 0.76% | 378 | 32 | Town |
| Harrison | 4 | 3,575 | 3,466 | 0.59% | 85 | 42 | Township |
| Delaware | 5 | 3,548 | 3,475 | 0.45% | 121 | 29 | Township |
| Union | 6 | 2,564 | 2,533 | 0.31% | 87 | 29 | Township |
| Chesterfield | 7 | 2,534 | 2,489 | 0.32% | 1,851 | 1 | Town |
| Albany | 8 | 2,291 | 2,290 | 0% | 1,156 | 2 | Town |
| Daleville | 9 | 1,741 | 1,651 | 0.87% | 818 | 2 | Town |
| Eaton | 10 | 1,594 | 1,593 | 0% | 428 | 4 | Town |
| Perry | 11 | 1,575 | 1,500 | 0.9% | 56 | 28 | Township |
| Niles | 12 | 1,404 | 1,366 | 0.57% | 48 | 29 | Township |
| Gaston | 13 | 810 | 797 | 0.25% | 2,225 | 0 | Town |
| Selma | 14 | 743 | 745 | 0% | 830 | 1 | Town |
| Blountsville | 15 | 97 | 97 | 0% | 858 | 0 | Town |
Muncie is the largest city in Delaware County, with a population of 65,430.
Blountsville is the smallest city in Delaware County, with a population of 97.
There are 15 cities in Delaware County, Indiana.