Resident Population in the South Census Region was 133833.98300 Thous. of Persons in January of 2025, according to the United States Federal Reserve. Historically, Resident Population in the South Census Region reached a record high of 133833.98300 in January of 2025 and a record low of 24565.00000 in January of 1900. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in the South Census Region - last updated from the United States Federal Reserve on April of 2026.