Resident Population in Alleghany County, VA was 14.59500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Alleghany County, VA reached a record high of 17.19700 in January of 2000 and a record low of 12.46100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Alleghany County, VA - last updated from the United States Federal Reserve on May of 2024.