Frost line depth in Mille Lacs County, MN

How deep the ground freezes in Mille Lacs County, MN

59 in. Dig to 60 in, just below the frost. Nearest NOAA station: Milaca, 12.2 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.

Code depth · Snow