| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Owego | 1 | 18,776 | 18,734 | 0.17% | 180 | 104 | Town |
| Barton | 2 | 8,276 | 8,583 | -0.65% | 139 | 59 | Town |
| Candor | 3 | 4,936 | 5,142 | -0.52% | 52 | 95 | Town |
| Owego | 4 | 4,394 | 3,640 | 2.95% | 1,724 | 3 | Village |
| Tioga | 5 | 4,273 | 4,440 | -0.42% | 73 | 58 | Town |
| Waverly | 6 | 4,156 | 4,366 | -0.84% | 1,820 | 2 | Village |
| Newark Valley | 7 | 3,486 | 3,641 | -0.4% | 69 | 50 | Town |
| Spencer | 8 | 2,848 | 2,944 | -0.32% | 58 | 49 | Town |
| Nichols | 9 | 2,285 | 2,350 | -0.22% | 68 | 34 | Town |
| Berkshire | 10 | 1,462 | 1,477 | 0.14% | 48 | 30 | Town |
| Richford | 11 | 1,019 | 1,041 | 0.1% | 27 | 38 | Town |
| Waverly | 12 | 938 | 969 | -0.64% | 7.0 | 125 | Town |
| Newark Valley | 13 | 877 | 937 | -1.24% | 888 | 1 | Village |
| Candor | 14 | 731 | 779 | -1.08% | 1,677 | 0 | Village |
| Spencer | 15 | 680 | 724 | -1.16% | 657 | 1 | Village |
| Nichols | 16 | 436 | 466 | -1.36% | 842 | 1 | Village |
Owego is the largest city in Tioga County, with a population of 18,776.
Nichols is the smallest city in Tioga County, with a population of 436.
There are 16 cities in Tioga County, New York.