| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbia City | 1 | 10,311 | 9,968 | 0.54% | 1,878 | 5 | City |
| South Whitley | 2 | 1,857 | 1,822 | 0.38% | 2,180 | 1 | Town |
| Churubusco | 3 | 1,849 | 1,871 | -0.22% | 1,756 | 1 | Town |
| Larwill | 4 | 274 | 272 | 0% | 1,531 | 0 | Town |
Columbia City is the largest city in Whitley County, with a population of 10,311.
Larwill is the smallest city in Whitley County, with a population of 274.
There are 4 cities in Whitley County, Indiana.