21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Warren | 1 | 107,398 | 106,148 | 0.65% | 2,224 | 48 | Township |
| Huntington | 2 | 20,430 | 20,327 | 0.19% | 560 | 36 | Township |
| Huntington | 3 | 17,038 | 17,010 | 0.03% | 1,804 | 9 | City |
| Warren | 4 | 7,833 | 7,775 | 0.08% | 243 | 32 | Township |
| Jackson | 5 | 4,208 | 4,109 | 0.6% | 116 | 36 | Township |
| Warren | 6 | 3,439 | 3,389 | 0.2% | 119 | 29 | Township |
| Salamonie | 7 | 2,301 | 2,259 | 0.48% | 63 | 36 | Township |
| Dallas | 8 | 2,055 | 2,019 | 0.49% | 91 | 23 | Township |
| Roanoke | 9 | 1,802 | 1,769 | 0.33% | 1,456 | 1 | Town |
| Rock Creek | 10 | 1,271 | 1,256 | 0.39% | 35 | 36 | Township |
| Union | 11 | 1,253 | 1,229 | 0.56% | 35 | 36 | Township |
| Warren | 12 | 1,202 | 1,180 | 0.33% | 1,110 | 1 | Town |
| Lancaster | 13 | 1,160 | 1,145 | 0.26% | 33 | 36 | Township |
| Andrews | 14 | 1,064 | 1,048 | 0.28% | 1,678 | 1 | Town |
| Jefferson | 15 | 742 | 722 | 0.68% | 21 | 36 | Township |
| Warren | 16 | 701 | 699 | -0.43% | 20 | 36 | Township |
| Warren | 17 | 666 | 656 | 0.45% | 27 | 24 | Township |
| Warren | 18 | 592 | 593 | 0.17% | 20 | 29 | Township |
| Wayne | 19 | 499 | 489 | 0.6% | 20 | 24 | Township |
| Polk | 20 | 482 | 464 | 1.05% | 21 | 23 | Township |
| Mount Etna | 21 | 114 | 112 | 0% | 974 | 0 | Town |
Warren is the largest city in Huntington County, with a population of 107,398.
Mount Etna is the smallest city in Huntington County, with a population of 114.
There are 21 cities in Huntington County, Indiana.