Allegany County Flag

Allegany County

State:
New York
County Seat:
Belmont

Allegany County's 2026 population is estimated at 47,243, reflecting a -0.06% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Allegany County is the 49th largest county in New York. The 2010 population was 48,973 and has grown -3.53% since 2010.

47,243
Total Population
46
Population Density (mi²)
49
Population Rank (State)
-28 -0.06%
Annual Population Growth

Allegany County Population

Demographics

Economics and Income Statistics