11 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| St. Marys | 1 | 12,181 | 12,720 | -0.73% | 123 | 99 | City |
| Ridgway | 2 | 3,882 | 4,026 | -0.61% | 1,486 | 3 | Borough |
| Fox | 3 | 3,487 | 3,572 | -0.23% | 52 | 67 | Township |
| Ridgway | 4 | 2,369 | 2,425 | -0.21% | 27 | 87 | Township |
| Johnsonburg | 5 | 2,278 | 2,398 | -0.87% | 790 | 3 | Borough |
| Jay | 6 | 1,873 | 1,958 | -0.53% | 28 | 68 | Township |
| Jones | 7 | 1,536 | 1,568 | 0% | 11 | 145 | Township |
| Horton | 8 | 1,297 | 1,363 | -0.69% | 23 | 57 | Township |
| Highland | 9 | 386 | 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 12,181.
Millstone is the smallest city in Elk County, with a population of 92.
There are 11 cities in Elk County, Pennsylvania.