Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Rock Island County, IL was 14636.00000 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 Rock Island County, IL reached a record high of 14817.00000 in January of 2021 and a record low of 11391.00000 in January of 2009. 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 Rock Island County, IL - last updated from the United States Federal Reserve on May of 2024.