Frost line depth in Lubbock County, TX

How deep the ground freezes in Lubbock County, TX

10 in. Dig to 12 in, the 12 in code minimum. Nearest NOAA station: Lubbock, 3 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.