Resident Population in Robertson County, TX was 17.26700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Robertson County, TX reached a record high of 17.26700 in January of 2023 and a record low of 14.38900 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Robertson County, TX - last updated from the United States Federal Reserve on May of 2024.