| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Collins | 1 | 2,212 | 2,332 | -0.9% | 278 | 8 | City |
| Mount Olive | 2 | 882 | 889 | -0.11% | 285 | 3 | Town |
| Seminary | 3 | 293 | 305 | -0.68% | 191 | 2 | Town |
Collins is the largest city in Covington County, with a population of 2,212.
Seminary is the smallest city in Covington County, with a population of 293.
There are 3 cities in Covington County, Mississippi.