Frost line depth in New Jersey
Estimated frost depth in typical soil runs from 19″ to 34″ across New Jersey's 21 counties. Pick your county or enter a ZIP code for a local estimate.
Deepest frost
- Sussex County 34″
- Warren County 32″
- Morris County 30″
- Hunterdon County 29″
- Somerset County 28″
Mildest
- Cape May County 19″
- Cumberland County 21″
- Atlantic County 22″
- Gloucester County 22″
- Salem County 22″
Frost depth by county
| County | Est. frost (typical soil) | Typical code range |
|---|---|---|
| Atlantic County | 22″ | 18–30″ |
| Bergen County | 24″ | 24–30″ |
| Burlington County | 23″ | 18–30″ |
| Camden County | 23″ | 18–30″ |
| Cape May County | 19″ | 18–24″ |
| Cumberland County | 21″ | 18–30″ |
| Essex County | 27″ | 24–36″ |
| Gloucester County | 22″ | 18–30″ |
| Hudson County | 24″ | 18–30″ |
| Hunterdon County | 29″ | 24–36″ |
| Mercer County | 23″ | 18–30″ |
| Middlesex County | 24″ | 24–30″ |
| Monmouth County | 24″ | 18–30″ |
| Morris County | 30″ | 24–42″ |
| Ocean County | 24″ | 24–30″ |
| Passaic County | 28″ | 24–36″ |
| Salem County | 22″ | 18–30″ |
| Somerset County | 28″ | 24–36″ |
| Sussex County | 34″ | 30–42″ |
| Union County | 25″ | 24–36″ |
| Warren County | 32″ | 30–42″ |
Common questions
What is the frost line depth in New Jersey?
It ranges from about 19 inches in the mildest county to 34 inches in the coldest, in typical soil.
Which New Jersey county has the deepest frost?
Sussex County, at about 34 inches in typical soil.