24 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Union | 1 | 53,990 | 55,953 | -0.28% | 1,524 | 35 | Town |
| Binghamton | 2 | 46,270 | 47,779 | -0.54% | 4,415 | 10 | City |
| Vestal | 3 | 32,297 | 29,330 | 0.7% | 625 | 52 | Town |
| Johnson City | 4 | 14,483 | 15,128 | -0.73% | 3,182 | 5 | Village |
| Endicott | 5 | 12,977 | 13,643 | -0.85% | 4,063 | 3 | Village |
| Chenango | 6 | 10,618 | 10,947 | -0.16% | 314 | 34 | Town |
| Fenton | 7 | 6,243 | 6,410 | 0.02% | 190 | 33 | Town |
| Windsor | 8 | 5,620 | 5,781 | -0.12% | 61 | 92 | Town |
| Kirkwood | 9 | 5,299 | 5,480 | -0.23% | 173 | 31 | Town |
| Maine | 10 | 5,015 | 5,163 | -0.14% | 110 | 46 | Town |
| Dickinson | 11 | 4,945 | 5,079 | -0.16% | 1,038 | 5 | Town |
| Conklin | 12 | 4,842 | 5,001 | -0.14% | 198 | 24 | Town |
| Colesville | 13 | 4,753 | 4,859 | -0.02% | 61 | 78 | Town |
| Binghamton | 14 | 4,456 | 4,600 | -0.25% | 176 | 25 | Town |
| Triangle | 15 | 2,731 | 2,804 | -0.04% | 72 | 38 | Town |
| Lisle | 16 | 2,640 | 2,685 | 0% | 56 | 47 | Town |
| Sanford | 17 | 2,182 | 2,230 | 0.05% | 24 | 90 | Town |
| Port Dickinson | 18 | 1,647 | 1,724 | -0.78% | 2,627 | 1 | Village |
| Nanticoke | 19 | 1,562 | 1,570 | 0.51% | 64 | 24 | Town |
| Deposit | 20 | 1,393 | 1,452 | -0.71% | 1,103 | 1 | Village |
| Deposit | 21 | 1,372 | 1,422 | -0.8% | 32 | 43 | Town |
| Whitney Point | 22 | 884 | 926 | -0.79% | 848 | 1 | Village |
| Windsor | 23 | 853 | 894 | -0.81% | 776 | 1 | Village |
| Lisle | 24 | 321 | 336 | -0.62% | 343 | 1 | Village |
Union is the largest city in Broome County, with a population of 53,990.
Lisle is the smallest city in Broome County, with a population of 321.
There are 24 cities in Broome County, New York.