Frostline.info

Frost line depth in Palm Beach County, Florida

Frost reaches about 0 inches in typical soil across Palm Beach County. Codes in this climate commonly set footing depth at 12 inches (code minimum).

No meaningful frost
Estimated frost depth
0″
typical silt/loam soil
Typical code footing depth
12″ minimum
rule of thumb for this climate
Design freezing index
0
°F-days, 100-year winter
ZIP codes covered
52
#59 of 67 counties in FL (1 = deepest)
0″12″24″36″ ground
Est. frost (typical soil) Typical code footing depth Clay–sand range

Frost depth by soil type

Soil typeEst. frost depth
Sand / gravel (drains well)0″
Silt / loam (typical yard soil)0″
Clay (holds water)0″

County average. Methodology.

Verify before you dig. These are climate-based estimates. The legally required frost depth is the figure your building department publishes in its IRC Table R301.2 (climatic and geographic design criteria). Call the Palm Beach County building or permitting office in Florida and call 811 before digging.

Frost depth by ZIP code in Palm Beach County

ZIPCityEst. frostCode range
33401West Palm Beach0″12″ minimum
33403West Palm Beach0″12″ minimum
33404West Palm Beach0″12″ minimum
33405West Palm Beach0″12″ minimum
33406West Palm Beach0″12″ minimum
33407West Palm Beach0″12″ minimum
33408North Palm Beach0″12″ minimum
33409West Palm Beach0″12″ minimum
33410Palm Beach Gardens0″12″ minimum
33411West Palm Beach0″12″ minimum
33412West Palm Beach0″12″ minimum
33413West Palm Beach0″12″ minimum
33414Wellington0″12″ minimum
33415West Palm Beach0″12″ minimum
33417West Palm Beach0″12″ minimum
33418Palm Beach Gardens0″12″ minimum
33426Boynton Beach0″12″ minimum
33428Boca Raton0″12″ minimum
33430Belle Glade0″12″ minimum
33431Boca Raton0″12″ minimum
33432Boca Raton0″12″ minimum
33433Boca Raton0″12″ minimum
33434Boca Raton0″12″ minimum
33435Boynton Beach0″12″ minimum
33436Boynton Beach0″12″ minimum
33437Boynton Beach0″12″ minimum
33438Canal Point0″12″ minimum
33444Delray Beach0″12″ minimum
33445Delray Beach0″12″ minimum
33446Delray Beach0″12″ minimum
33449Lake Worth0″12″ minimum
33458Jupiter0″12″ minimum
33460Lake Worth Beach0″12″ minimum
33461Lake Worth0″12″ minimum
33462Lake Worth0″12″ minimum
33463Lake Worth0″12″ minimum
33467Lake Worth0″12″ minimum
33469Jupiter0″12″ minimum
33470Loxahatchee0″12″ minimum
33472Boynton Beach0″12″ minimum
33473Boynton Beach0″12″ minimum
33476Pahokee0″12″ minimum
33477Jupiter0″12″ minimum
33478Jupiter0″12″ minimum
33480Palm Beach0″12″ minimum
33483Delray Beach0″12″ minimum
33484Delray Beach0″12″ minimum
33486Boca Raton0″12″ minimum
33487Boca Raton0″12″ minimum
33493South Bay0″12″ minimum
33496Boca Raton0″12″ minimum
33498Boca Raton0″12″ minimum

What this means for your project in Palm Beach County

Deck footings & piers

Footings must bear below the frost line and at least 12″ below undisturbed ground. For planning in this area, budget for holes around 12″ deep until your permit office confirms the exact figure.

Fence posts

Set posts at least one-third of their above-ground height. Where frost heave is a problem, carry concrete footings below the frost line (about 12″ here in typical soil) and bell or taper the bottom.

Water & irrigation lines

Bury supply lines below the frost depth. Your water utility or plumbing code sets the minimum cover; freezing is rare, but exposed pipes still need insulation.

Slabs & frost-protected foundations

Frost-protected shallow foundations (IRC R403.3) use the 100-year air freezing index — 0 °F-days here — to size perimeter insulation, letting footings sit shallower than the frost line.

Weather stations used

NOAA weather stationDistance100-yr AFI
Loxahatchee, FL7 mi0
Pompano Beach, FL27 mi0
Belle Glade Exp Sta, FL29 mi0
Fort Lauderdale, FL36 mi0

Nearby counties

Common questions

What is the frost line depth in Palm Beach County?

About 0 inches in typical soil, based on NOAA's 100-year air freezing index. Across the county's ZIP codes the estimate runs from 0 to 0 inches.

How deep should footings be in Palm Beach County, Florida?

Codes in climates like this commonly require 12 inches (code minimum). The Palm Beach County building department publishes the required frost depth in its adopted code (IRC Table R301.2).

Does frost depth vary within Palm Beach County?

Very little. Estimates across the county stay within 1 inches. Soil type matters more than location here.