Resident Population in Pittsburg County, OK was 43.47900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Pittsburg County, OK reached a record high of 45.79900 in January of 2010 and a record low of 37.52100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pittsburg County, OK - last updated from the United States Federal Reserve on May of 2024.