Resident Population in Nez Perce County, ID was 42.98700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Nez Perce County, ID reached a record high of 43.00400 in January of 2022 and a record low of 30.37600 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Nez Perce County, ID - last updated from the United States Federal Reserve on May of 2024.