Frost line depth in Pike County, MS
How deep the ground freezes in Pike County, MS
4 in. Dig to 12 in, the 12 in code minimum. Nearest NOAA station: Mccomb/Pike Co/John E Lewis Ap, 4.3 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.