Frost line depth in Allen County, IN

How deep the ground freezes in Allen County, IN

29 in. Dig to 29 in, just below the frost. Nearest NOAA station: Ft Wayne Intl Ap, 10.9 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.