Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Lake County, IL was 46314.00000 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 Lake County, IL reached a record high of 47253.00000 in January of 2015 and a record low of 44992.00000 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 Lake County, IL - last updated from the United States Federal Reserve on May of 2024.