Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Seneca County, OH was 1595.00000 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 Seneca County, OH reached a record high of 1630.00000 in January of 2021 and a record low of 1213.00000 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 Seneca County, OH - last updated from the United States Federal Reserve on May of 2024.