Frost Line Depth in Valencia County, NM: New Mexico Codes Range 6

No official local value

No official frost line depth is published for Valencia County.

No verified code nearby; verified New Mexico codes range 6–16 in.

Source and how we checked

We searched this place’s own code and website and found no published frost line depth.

Climate: 152 nights a year at or below 32 °F (NOAA 1991–2020, Los Lunas 3 Ssw, 4.3 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

6–16 inrange of verified New Mexico codes
152nights a year at or below 32 °F
61%of nearby soil rated “none” for frost action (USDA)

Does Valencia County have an official frost line depth?

No adopted frost line depth found for Valencia County in its official documents (checked Oct 2026). No verified code lies near Valencia County; the New Mexico codes we verified range from 6 to 16 in. Ask the building department for Valencia County’s own number before you dig.

What frost line depth does Valencia County use for footings under Table R301.2(1)?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Valencia County building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 16 in (the deepest verified state value) unless the building department tells you otherwise.
Book the footing inspection before you pour concrete.

How deep do footings, decks and water lines need to be in Valencia County?

Drawn with the deepest New Mexico official value (16 in). Confirm Valencia County’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Valencia County: dig at least 16 in (41 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 16 in until Valencia County confirms its own
Project	Depth	Rule
House or garage footing	16 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	16 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	22 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	16 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 Valencia County?

Average lows are at or below freezing from Nov to Mar. 152 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 19 °F.

NOAA 1991–2020 climate normals, Los Lunas 3 Ssw station, 4.3 mi away, elevation 4,840 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	19	23.4	30.1	37.2	46.4	55.5	62.2	60.3	51.7	38.4	26.6	19.7
High	51.4	57.7	65.7	73.1	81.7	91.8	93.3	91.1	85	74.3	60.9	50.2

Valencia County has more freezing nights than 12 of the 16 other New Mexico places we track. The New Mexico median is 124. Coldest: McKinley County; mildest: Lea County.

How likely is the soil in Valencia County to heave?

None 61%Low 39%

USDA rates the sampled soil around Valencia County as 61% none, 39% low, 0% high for frost action (main soils: Bluepoint, Madurez, Vinton).

USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.

Valencia County at a glance

Frost line depth: No official local value
Population (2023 est.): 79,141
Mean annual temperature: 56.1 °F
ZIP codes (9): 87002 · 87006 · 87023 · 87026 · 87031 · 87042 · 87060 · 87062 · 87068