Resident Population in Oliver County, ND was 1.87900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Oliver County, ND reached a record high of 2.61300 in January of 1984 and a record low of 1.64500 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Oliver County, ND - last updated from the United States Federal Reserve on May of 2024.