18 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jeffersonville | 1 | 66,406 | 61,563 | 1.74% | 2,498 | 27 | Township |
| Jeffersonville | 2 | 54,581 | 49,573 | 1.55% | 1,602 | 34 | City |
| Clarksville | 3 | 21,900 | 22,323 | -0.32% | 2,181 | 10 | Town |
| Charlestown | 4 | 16,644 | 15,227 | 1.09% | 258 | 65 | Township |
| Silver Creek | 5 | 14,456 | 13,830 | -0.01% | 867 | 17 | Township |
| Sellersburg | 6 | 10,396 | 9,378 | 1.66% | 1,403 | 7 | Town |
| Utica | 7 | 9,468 | 8,184 | 2.36% | 440 | 22 | Township |
| Charlestown | 8 | 8,916 | 7,844 | 2.05% | 779 | 11 | City |
| Carr | 9 | 5,186 | 4,853 | 0.82% | 197 | 26 | Township |
| Union | 10 | 4,851 | 4,548 | 1.19% | 233 | 21 | Township |
| Wood | 11 | 2,959 | 2,777 | 1.2% | 76 | 39 | Township |
| Oregon | 12 | 1,865 | 1,737 | 1.25% | 60 | 31 | Township |
| Utica | 13 | 1,436 | 890 | 6.77% | 1,206 | 1 | Town |
| New Pekin | 14 | 1,336 | 1,327 | 0.15% | 561 | 2 | Town |
| Owen | 15 | 1,016 | 946 | 1.4% | 59 | 17 | Township |
| Borden | 16 | 832 | 783 | 0.97% | 598 | 1 | Town |
| Bethlehem | 17 | 713 | 729 | -0.7% | 20 | 35 | Township |
| Bethlehem | 18 | 383 | 363 | 0.79% | 21 | 18 | Township |
Jeffersonville is the largest city in Clark County, with a population of 66,406.
Bethlehem is the smallest city in Clark County, with a population of 383.
There are 18 cities in Clark County, Indiana.