Resident Population in Wyandot County, OH was 21.45700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Wyandot County, OH reached a record high of 23.30000 in January of 1975 and a record low of 21.45700 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Wyandot County, OH - last updated from the United States Federal Reserve on May of 2024.