How many counties are there in Minnesota?

87.

According to the County and City Data Book 2007, published by the US Census Bureau, the state of Minnesota has a total of 87 counties. St. Louis, with an area of 6,860 square miles, is the state’â„¢s largest county, and occupies the 51st position in the US county area ranking. Ramsey, on the other hand, is Minnesota’â„¢s smallest county, with and area of 170 square miles.