Resident Population in Hartley County, TX was 4.99600 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Hartley County, TX reached a record high of 6.09200 in January of 2012 and a record low of 2.78200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Hartley County, TX - last updated from the United States Federal Reserve on April of 2026.