Frost depth · 50 states
Deck code & footing depth by state
The deck framing tables are national (IRC R507), but footing depth follows your local frost line. Pick your state for its typical footing depth and a calculator preset to it.
Alabama12″Alaska100″Arizona18″Arkansas14″California18″Colorado36″Connecticut42″Delaware30″Florida12″Georgia12″Hawaii12″Idaho24″Illinois42″Indiana36″Iowa48″Kansas30″Kentucky24″Louisiana12″Maine60″Maryland30″Massachusetts48″Michigan42″Minnesota60″Mississippi12″Missouri30″Montana48″Nebraska42″Nevada24″New Hampshire60″New Jersey36″New Mexico18″New York48″North Carolina15″North Dakota60″Ohio32″Oklahoma18″Oregon18″Pennsylvania36″Rhode Island40″South Carolina12″South Dakota48″Tennessee15″Texas12″Utah30″Vermont60″Virginia18″Washington18″West Virginia30″Wisconsin48″Wyoming48″