Frost line depth in Hancock County, ME
How deep the ground freezes in Hancock County, ME
36 in. Dig to 37 in, just below the frost. Nearest NOAA station: E Surry, 6.6 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.