Resident Population in Dallas County, TX was 2606.35800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Dallas County, TX reached a record high of 2635.60300 in January of 2019 and a record low of 1327.69600 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Dallas County, TX - last updated from the United States Federal Reserve on May of 2024.