Resident Population in McKenzie County, ND was 14.78200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in McKenzie County, ND reached a record high of 15.03800 in January of 2019 and a record low of 5.45900 in January of 2004. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in McKenzie County, ND - last updated from the United States Federal Reserve on April of 2026.