Resident Population in Jasper County, MO was 126.47900 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Jasper County, MO reached a record high of 126.47900 in January of 2024 and a record low of 79.85200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Jasper County, MO - last updated from the United States Federal Reserve on April of 2026.