Frost line depth in Dickey County, ND
How deep the ground freezes in Dickey County, ND
57 in. Dig to 57 in, just below the frost. Nearest NOAA station: Fullerton 1 Ese, 5.8 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.