Resident Population in Billings County, ND was 1.03400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Billings County, ND reached a record high of 1.21300 in January of 1982 and a record low of 0.76300 in January of 2006. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Billings County, ND - last updated from the United States Federal Reserve on May of 2024.