Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Morris County, NJ was 341684.00000 Persons in January of 2023, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Morris County, NJ reached a record high of 373504.00000 in January of 2009 and a record low of 341684.00000 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Morris County, NJ - last updated from the United States Federal Reserve on September of 2025.