6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Martinsville | 1 | 11,965 | 11,925 | 0.06% | 1,307 | 9 | City |
| Mooresville | 2 | 10,317 | 9,446 | 1.43% | 1,538 | 7 | Town |
| Monrovia | 3 | 2,638 | 1,690 | 6.37% | 1,368 | 2 | Town |
| Brooklyn | 4 | 2,635 | 2,514 | 0.76% | 2,662 | 1 | Town |
| Morgantown | 5 | 989 | 1,016 | -0.4% | 2,616 | 0 | Town |
| Paragon | 6 | 579 | 558 | 0.7% | 2,105 | 0 | Town |
Martinsville is the largest city in Morgan County, with a population of 11,965.
Paragon is the smallest city in Morgan County, with a population of 579.
There are 6 cities in Morgan County, Indiana.