Frost line depth in Lorain County, OH
How deep the ground freezes in Lorain County, OH
28 in. Dig to 29 in, just below the frost. Nearest NOAA station: Elyria Lorain Co Ap, 6.4 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.