Frost Line Depth in Vineland, NJ: 30 in (New Jersey rule)

State-set value

30in

76 cm · 2 ft 6 in

30 in (New Jersey rule)

Set by the state: N.J.A.C. 5:23-3.21 Table R301.2, South New Jersey zone (Cumberland County).

Source and how we checked

Vineland does not publish its own value; the state rule applies.

Document: law.cornell.edu

Climate: 108 nights a year at or below 32 °F (NOAA 1991–2020, Millville Municipal Airport, 7.7 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

108nights a year at or below 32 °F
71%of nearby soil rated “moderate” for frost action (USDA)

How deep is the frost line in Vineland?

New Jersey sets the frost footing depth for Vineland at 30 in (76 cm). Footings, piers and other permanent supports must reach at least this depth (IRC R403.1.4.1).

Who sets the frost line depth in Vineland?

New Jersey writes this depth into its statewide residential code, so Vineland’s building department enforces the state’s number rather than setting its own. See how New Jersey sets frost line depth.

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

House or garage footing Deck footing Water service line Fence post

House or garage footing in Vineland: dig at least 30 in (76 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Minimum depths in Vineland with a 30 in frost line
Project	Depth	Rule
House or garage footing	30 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	30 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	36 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	30 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 Vineland?

Average lows are at or below freezing from Dec to Mar. 108 nights a year reach 32 °F or colder; Jan is coldest, with an average low of 23.8 °F.

NOAA 1991–2020 climate normals, Millville Municipal Airport station, 7.7 mi away, elevation 70 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	23.8	24.6	31.4	40.6	50.4	60.2	66.2	64.4	57.2	45	34.9	27.9
High	42.2	44.6	52.3	63.7	72.9	81.6	86.1	84.3	78	66.9	56.1	46.7

How likely is the soil in Vineland to heave?

Moderate 71%High 28%

USDA rates the sampled soil around Vineland as 1% low, 71% moderate, 28% high for frost action (main soils: Manahawkin, Woodstown, Downer).

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

How do you confirm the frost line before you dig in Vineland?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Vineland building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 30 in unless the building department tells you otherwise.
Book the footing inspection before you pour concrete.

Vineland at a glance

Frost line depth: 30 in (New Jersey rule)
County: Cumberland County
Population (2023 est.): 60,797
Mean annual temperature: 54.2 °F
ZIP codes (4): 08332 · 08344 · 08360 · 08361