Resident Population in Grant County, ND was 2.21500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Grant County, ND reached a record high of 5.10000 in January of 1971 and a record low of 2.21500 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Grant County, ND - last updated from the United States Federal Reserve on May of 2024.