Frost line depth in Anoka County, MN

How deep the ground freezes in Anoka County, MN

54 in. Dig to 55 in, just below the frost. Nearest NOAA station: Andover 1n, 2.8 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