Resident Population in Tarrant County, TX was 2230.70800 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Tarrant County, TX reached a record high of 2230.70800 in January of 2024 and a record low of 715.58700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Tarrant County, TX - last updated from the United States Federal Reserve on April of 2026.