SIZE: The largest Minnesota county by size is St. Louis County (6,226 square miles). POPULATION: The largest Minnesota county by population is Hennepin County (population of 1,116,200).
Hennepin County has the highest population in Minnesota.
Hennepin County
St. Louis County is the largest county in Minnesota.
In 2006, the U.S. Census Bureau estimated that the population of Pine County, Minnesota was 28,419.
About 15,356.
Lake of the Woods County in Minnesota has the smallest population, with an estimated population of around 3,900 people.
The smallest county in Minnesota is Ramsey County (156 square miles).
Elbow Lake, Grant County, Minnesota has a population of 1,275 (2000 census)Elbow Lake, Becker County, Minnesota has a population of 104 (2000 census)
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King County
According to census.gov, Milwaukee County, Wisconsin, has the most population at 951,252 people in 2007.