Resident Population in McHenry County, ND was 5.13100 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in McHenry County, ND reached a record high of 8.97700 in January of 1970 and a record low of 5.13100 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in McHenry County, ND - last updated from the United States Federal Reserve on May of 2024.