Resident Population in Fayette County, OH was 28.81700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Fayette County, OH reached a record high of 29.01600 in January of 2010 and a record low of 25.46100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Fayette County, OH - last updated from the United States Federal Reserve on May of 2024.