Resident Population in Richland County, ND was 16.55800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Richland County, ND reached a record high of 19.66300 in January of 1983 and a record low of 16.07400 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Richland County, ND - last updated from the United States Federal Reserve on May of 2024.