Resident Population in Sublette County, WY was 8.96900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Sublette County, WY reached a record high of 10.48900 in January of 2012 and a record low of 3.60000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Sublette County, WY - last updated from the United States Federal Reserve on May of 2024.