Resident Population in Natrona County, WY was 79.94100 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Natrona County, WY reached a record high of 82.21800 in January of 2015 and a record low of 51.26400 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Natrona County, WY - last updated from the United States Federal Reserve on May of 2024.