Frost Line Depth in Baldwin County, Alabama
- 1 verified code nearby
- Checked Oct 2026
No official local value
No official frost line depth is published for Baldwin County.
Nearby official codes require 12 in (1 verified code).
Source and how we checked
We searched this place’s own code and website and found no published frost line depth.
Climate: 28 nights a year at or below 32 °F (NOAA 1991–2020, Robertsdale, 7 mi).
Checked Oct 2026. Report a correction
Does Baldwin County have an official frost line depth?
No adopted frost line depth found for Baldwin County in its official documents (checked Oct 2026). The nearest official values, from codes we verified, are 12 in. Use the deepest of them until the building department confirms Baldwin County’s own number.
What frost line depth does Baldwin County use for footings under Table R301.2(1)? Is it 12 in, like Mobile?
How deep do footings, decks and water lines need to be in Baldwin County?
Drawn with the deepest nearby official value (12 in). Confirm Baldwin County’s own depth before you dig.
House or garage footing in Baldwin County: dig at least 12 in (30 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).
| Project | Depth | Rule |
|---|---|---|
| House or garage footing | 12 in | Below the frost line and at least 12 in deep (IRC R403.1.4) |
| Deck footing (attached) | 12 in | Below the frost line and at least 12 in deep (IRC R507.3) |
| Water service line | 18 in | 6 in below the frost line and at least 12 in deep (IRC P2603.5) |
| Fence post bottom | 12 in | No code rule; common practice is below the frost line |
Work out posts, concrete and footing sizes with the fence post depth calculator or the deck footing calculator.
How cold does it get in Baldwin County?
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Baldwin County never averages a low below freezing. 28 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 38.9 °F.
NOAA 1991–2020 climate normals, Robertsdale station, 7 mi away, elevation 161 ft.
Monthly temperatures as a table
| °F | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low | 38.9 | 42 | 48.1 | 54.2 | 62.4 | 69.8 | 72.2 | 71.8 | 67.3 | 56.5 | 46.5 | 41.3 |
| High | 61 | 64.9 | 71.1 | 76.8 | 83.9 | 88.2 | 89.8 | 89.5 | 86.5 | 79.1 | 69.9 | 63.1 |
Baldwin County has fewer freezing nights than 34 of the 39 other Alabama places we track. The Alabama median is 52. Coldest: Tallapoosa County; mildest: Mobile.
What frost line depth do towns near Baldwin County use?
One official code near Baldwin County is verified.
| Place | Verified frost line | Distance |
|---|---|---|
| Mobile | 12 in | 21 mi away |
How likely is the soil in Baldwin County to heave?
USDA rates the sampled soil around Baldwin County as 100% none for frost action (main soils: Sunsweet, Norfolk, Malbis).
USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.
Baldwin County at a glance
- Frost line depth
- No official local value
- Population (2023 est.)
- 253,507
- Mean annual temperature
- 66.5 °F
- ZIP codes (24)
- 36502 · 36507 · 36511 · 36526 · 36527 · 36530 · 36532 · 36535 · 36542 · 36547 · 36549 · 36550 · 36551 · 36555 · 36559 · 36561 · 36562 · 36564 · 36567 · 36574 · 36576 · 36578 · 36579 · 36580