Frost line depth in Kingfisher County, OK
How deep the ground freezes in Kingfisher County, OK
14 in. Dig to 15 in, just below the frost. Nearest NOAA station: Kingfisher, 6.3 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.