Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Boulder County, CO was 2462.00000 Persons in January of 2023, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Boulder County, CO reached a record high of 2699.00000 in January of 2019 and a record low of 2116.00000 in January of 2010. 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 Boulder County, CO - last updated from the United States Federal Reserve on September of 2025.