Thornton, NH ZIP code
The ZIP code for Thornton, New Hampshire is 03285. It is in Grafton County.
- Population in these ZIPs
- 2,799
- Avg. median income
- $90,000population-weighted
- Typical home value
- $429,900population-weighted
- Metro area
- Lebanon-Claremont, NH-VT
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Thornton, NH ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 03285 | 2,799 | $90,022 | $429,900 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Thornton
- Woodstock 3 mi
- North Woodstock 5 mi
- Campton 7 mi
- North Sandwich 8 mi
- Lincoln 10 mi
- Warren 11 mi
- Woodsville 12 mi
- Center Sandwich 13 mi
- Glencliff 13 mi
- Holderness 13 mi
- Waterville Valley 14 mi
- Plymouth 15 mi
Frequently asked questions
What is the ZIP code for Thornton, NH?
The ZIP code for Thornton, NH is 03285.
What county is Thornton, New Hampshire in?
Thornton ZIP codes are in Grafton County.