24 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Union | 1 | 54,144 | 55,953 | -0.28% | 1,528 | 35 | Town |
| Binghamton | 2 | 46,521 | 47,779 | -0.54% | 4,439 | 10 | City |
| Vestal | 3 | 32,072 | 29,330 | 0.71% | 621 | 52 | Town |
| Johnson City | 4 | 14,590 | 15,128 | -0.73% | 3,205 | 5 | Village |
| Endicott | 5 | 13,088 | 13,643 | -0.84% | 4,098 | 3 | Village |
| Chenango | 6 | 10,635 | 10,947 | -0.16% | 314 | 34 | Town |
| Fenton | 7 | 6,242 | 6,410 | 0.02% | 190 | 33 | Town |
| Windsor | 8 | 5,627 | 5,781 | -0.12% | 61 | 92 | Town |
| Kirkwood | 9 | 5,311 | 5,480 | -0.23% | 173 | 31 | Town |
| Maine | 10 | 5,022 | 5,163 | -0.14% | 110 | 46 | Town |
| Dickinson | 11 | 4,953 | 5,079 | -0.16% | 1,039 | 5 | Town |
| Conklin | 12 | 4,849 | 5,001 | -0.14% | 198 | 24 | Town |
| Colesville | 13 | 4,754 | 4,859 | -0.02% | 61 | 78 | Town |
| Binghamton | 14 | 4,467 | 4,600 | -0.25% | 177 | 25 | Town |
| Triangle | 15 | 2,732 | 2,804 | -0.04% | 72 | 38 | Town |
| Lisle | 16 | 2,640 | 2,685 | 0% | 56 | 47 | Town |
| Sanford | 17 | 2,181 | 2,230 | 0.05% | 24 | 90 | Town |
| Port Dickinson | 18 | 1,660 | 1,724 | -0.78% | 2,648 | 1 | Village |
| Nanticoke | 19 | 1,554 | 1,570 | 0.52% | 64 | 24 | Town |
| Deposit | 20 | 1,403 | 1,452 | -0.71% | 1,111 | 1 | Village |
| Deposit | 21 | 1,383 | 1,422 | -0.79% | 32 | 43 | Town |
| Whitney Point | 22 | 891 | 926 | -0.78% | 854 | 1 | Village |
| Windsor | 23 | 860 | 894 | -0.81% | 783 | 1 | Village |
| Lisle | 24 | 323 | 336 | -0.92% | 345 | 1 | Village |
Union is the largest city in Broome County, with a population of 54,144.
Lisle is the smallest city in Broome County, with a population of 323.
There are 24 cities in Broome County, New York.