Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Rockingham County, NH was 285266.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Rockingham County, NH reached a record high of 285266.00000 in January of 2022 and a record low of 277937.00000 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, White Alone (5-year estimate) in Rockingham County, NH - last updated from the United States Federal Reserve on May of 2024.