8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ayr township | 1 | 1,965 | 2,032 | -0.86% | 42 | 46.27 | Township |
| Licking Creek township | 2 | 1,563 | 1,576 | -0.57% | 35 | 44.66 | Township |
| Belfast township | 3 | 1,319 | 1,362 | -0.83% | 26 | 50.15 | Township |
| McConnellsburg | 4 | 1,107 | 1,149 | -0.72% | 3,190 | 0.35 | Borough |
| Union township | 5 | 765 | 750 | 0.39% | 25 | 30.50 | Township |
| Brush Creek township | 6 | 715 | 736 | -0.69% | 13 | 54.29 | Township |
| Wells township | 7 | 478 | 499 | -1.04% | 13 | 37.37 | Township |
| Needmore | 8 | 98 | 92 | -3.92% | 216 | 0.45 | CDP |
Ayr township is the largest city in Fulton County, with a population of 1,965.
Needmore is the smallest city in Fulton County.
There are 8 cities in Fulton County, Pennsylvania.