Resident Population in Starr County, TX was 65.93400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Starr County, TX reached a record high of 65.97200 in January of 2021 and a record low of 17.70700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Starr County, TX - last updated from the United States Federal Reserve on May of 2024.