Resident Population in Campbell County, WY was 47.94600 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Campbell County, WY reached a record high of 49.33600 in January of 2015 and a record low of 12.00000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Campbell County, WY - last updated from the United States Federal Reserve on April of 2026.