Lac Qui Parle County, MN - Resident Population in Lac qui Parle County, MN was 6.63000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Lac Qui Parle County, MN - Resident Population in Lac qui Parle County, MN reached a record high of 11.16400 in January of 1970 and a record low of 6.62800 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Lac Qui Parle County, MN - Resident Population in Lac qui Parle County, MN - last updated from the United States Federal Reserve on May of 2024.