Frost line depth in Aitkin County, MN

How deep the ground freezes in Aitkin County, MN

62 in. Dig to 62 in, just below the frost. Nearest NOAA station: Aitkin 2e, 12.9 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