Resident Population in Cheyenne County, CO was 1.71200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Cheyenne County, CO reached a record high of 2.45000 in January of 1992 and a record low of 1.71200 in January of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cheyenne County, CO - last updated from the United States Federal Reserve on April of 2026.