Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Grimes County, TX was 3456.00000 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 Grimes County, TX reached a record high of 4437.00000 in January of 2009 and a record low of 3456.00000 in January of 2022. 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 Grimes County, TX - last updated from the United States Federal Reserve on May of 2024.