7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Licking township | 1 | 7,560 | 7,741 | -0.26% | 184 | 41.18 | Township |
| Hartford City | 2 | 5,900 | 6,085 | -0.62% | 1,520 | 3.88 | City |
| Harrison township | 3 | 2,296 | 2,342 | -0.17% | 54 | 42.13 | Township |
| Montpelier | 4 | 1,498 | 1,538 | -0.53% | 1,001 | 1.50 | City |
| Jackson township | 5 | 1,199 | 1,216 | 0% | 26 | 45.56 | Township |
| Shamrock Lakes | 6 | 215 | 222 | -0.46% | 817 | 0.26 | Town |
| Jalapa | 7 | 7 | 143 | -61.11% | 12 | 0.57 | CDP |
Licking township is the largest city in Blackford County, with a population of 7,560.
Jalapa is the smallest city in Blackford County.
There are 7 cities in Blackford County, Indiana.