11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| St. Marys | 1 | 12,271 | 12,720 | -0.73% | 124 | 99 | City |
| Ridgway | 2 | 3,906 | 4,026 | -0.61% | 1,495 | 3 | Borough |
| Fox | 3 | 3,495 | 3,572 | -0.23% | 52 | 67 | Township |
| Ridgway | 4 | 2,374 | 2,425 | -0.21% | 27 | 87 | Township |
| Johnsonburg | 5 | 2,298 | 2,398 | -0.86% | 797 | 3 | Borough |
| Jay | 6 | 1,883 | 1,958 | -0.53% | 28 | 68 | Township |
| Jones | 7 | 1,536 | 1,568 | 0% | 11 | 145 | Township |
| Horton | 8 | 1,306 | 1,363 | -0.68% | 23 | 57 | Township |
| Highland | 9 | 387 | 397 | -0.26% | 4 | 87 | Township |
| Benezette | 10 | 215 | 218 | 0% | 2 | 107 | Township |
| Millstone | 11 | 92 | 95 | 0% | 2 | 41 | Township |
St. Marys is the largest city in Elk County, with a population of 12,271.
Millstone is the smallest city in Elk County, with a population of 92.
There are 11 cities in Elk County, Pennsylvania.