Resident Population in Olmsted County, MN was 164.78400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Olmsted County, MN reached a record high of 164.78400 in January of 2023 and a record low of 84.10400 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Olmsted County, MN - last updated from the United States Federal Reserve on May of 2024.