Population Estimate, Total, Hispanic or Latino (5-year estimate) in Marion County, MO was 125.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in Marion County, MO reached a record high of 542.00000 in January of 2021 and a record low of 125.00000 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Hispanic or Latino (5-year estimate) in Marion County, MO - last updated from the United States Federal Reserve on May of 2024.