6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Licking | 1 | 7,516 | 7,745 | -0.5% | 183 | 41 | Township |
| Hartford City | 2 | 5,888 | 6,083 | -0.66% | 1,517 | 4 | City |
| Harrison | 3 | 2,272 | 2,343 | -0.57% | 54 | 42 | Township |
| Montpelier | 4 | 1,493 | 1,537 | -0.6% | 997 | 1 | City |
| Jackson | 5 | 1,194 | 1,218 | -0.25% | 26 | 46 | Township |
| Shamrock Lakes | 6 | 214 | 222 | -0.93% | 814 | 0 | Town |
Licking is the largest city in Blackford County, with a population of 7,516.
Shamrock Lakes is the smallest city in Blackford County, with a population of 214.
There are 6 cities in Blackford County, Indiana.