Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Sullivan County, IN was 750.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Sullivan County, IN reached a record high of 1124.00000 in January of 2014 and a record low of 728.00000 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Sullivan County, IN - last updated from the United States Federal Reserve on May of 2024.