City | Rank | 2026 Pop.↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Albany | 1 | 102,305 | 98,865 | 0.6% | 4,780 | 21 | City |
| Colonie | 2 | 87,246 | 85,397 | 0.47% | 1,559 | 56 | Town |
| Guilderland | 3 | 38,499 | 36,858 | 0.74% | 665 | 58 | Town |
| Bethlehem | 4 | 35,972 | 35,061 | 0.81% | 734 | 49 | Town |
| Cohoes | 5 | 18,615 | 18,121 | 0.52% | 4,934 | 4 | City |
| Watervliet | 6 | 10,214 | 10,358 | -0.27% | 7,611 | 1 | City |
| New Scotland | 7 | 9,359 | 9,077 | 0.65% | 163 | 58 | Town |
| Colonie | 8 | 7,659 | 7,761 | -0.26% | 2,362 | 3 | Village |
| Coeymans | 9 | 7,363 | 7,254 | 0.6% | 147 | 50 | Town |
| Menands | 10 | 4,603 | 4,537 | -0.26% | 1,503 | 3 | Village |
| Westerlo | 11 | 3,262 | 3,191 | 0.22% | 56 | 58 | Town |
| Ravena | 12 | 3,246 | 3,265 | -0.22% | 2,211 | 1 | Village |
| Green Island | 13 | 2,967 | 2,982 | 0.03% | 3,972 | 1 | Town |
| Green Island | 14 | 2,961 | 2,982 | -0.17% | 3,964 | 1 | Village |
| Voorheesville | 15 | 2,846 | 2,840 | 0% | 1,331 | 2 | Village |
| Berne | 16 | 2,704 | 2,687 | 0.26% | 42 | 64 | Town |
| Knox | 17 | 2,628 | 2,622 | 0.19% | 63 | 42 | Town |
| Rensselaerville | 18 | 1,887 | 1,820 | 0.86% | 31 | 61 | Town |
| Altamont | 19 | 1,644 | 1,659 | -0.24% | 1,299 | 1 | Village |
| Clarksville | 20 | 946 | 974 | -0.32% | 26 | 36 | Town |
Albany is the largest city in Albany County, with a population of 102,305.
Clarksville is the smallest city in Albany County, with a population of 946.
There are 20 cities in Albany County, New York.