8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| St. Marys | 1 | 12,183 | 12,722 | -0.88% | 123 | 99.32 | City |
| Ridgway | 2 | 3,874 | 4,033 | -0.82% | 1,483 | 2.61 | Borough |
| Fox township | 3 | 3,442 | 3,572 | -0.95% | 51 | 67.18 | Township |
| Ridgway township | 4 | 2,349 | 2,422 | -0.59% | 27 | 86.89 | Township |
| Johnsonburg | 5 | 2,281 | 2,401 | -1.04% | 791 | 2.88 | Borough |
| Jay township | 6 | 1,856 | 1,957 | -1.17% | 27 | 67.70 | Township |
| Jones township | 7 | 1,511 | 1,568 | -0.79% | 10 | 144.78 | Township |
| Horton township | 8 | 1,286 | 1,359 | -1.23% | 23 | 57.01 | Township |
St. Marys is the largest city in Elk County, with a population of 12,183.
Horton township is the smallest city in Elk County.
There are 8 cities in Elk County, Pennsylvania.