ZIP code · Thornton · New Hampshire · United States
ZIP code 03285 — Thornton
ZIP code 03285 serves Thornton, New Hampshire.
- Postal code
- 03285Single source Value from one source, not cross-checked.
- City
- Thornton
- County
- Grafton FIPS 33009
- State
- New Hampshire
- Country
- United States
- Coordinates
- 43.9050, -71.6470 — precision precise (locality)
View on OpenStreetMap - Population
- 2,763 (ZCTA, ACS 5-year)
- Population density
- 55 / sq mi
- Land area
- 50.1 sq mi (129.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $81,094
- Per-capita income
- $45,040
- Median age
- 47.3
- Households
- 1,206
- Housing units
- 1,982
- Median home value
- $289,700
- Median gross rent
- $1,269 / month
- Congressional district
- NH-2 (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 603 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 03285 with another ZIP · ZIPs within 25 miles · distance from 03285
Nearby localities
Map of ZIP code 03285
Climate — monthly normals
Warmest month Jul (avg high 77°F), coldest Jan (avg low 6°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 30 | 38 | 50 | 63 | 72 | 77 | 76 | 69 | 56 | 43 | 33 |
| Avg low °F | 6 | 6 | 15 | 29 | 40 | 49 | 54 | 52 | 45 | 34 | 25 | 14 |
| Precip in | 3.9 | 3.3 | 4.3 | 4.6 | 4.2 | 5.2 | 4.8 | 4.3 | 4.2 | 5.6 | 4.5 | 5.0 |
NOAA 1991–2020 climate normals from the nearest station: WATERVILLE VALLEY NEPP (7.3 mi) · NOAA NCEI
Places in ZIP 03285
- 3 schools
- 1 restaurants & cafés
- 1 bars & pubs
- 1 parks
- 1 playgrounds
- 1 libraries
- 1 places of worship
- 1 EV charging stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page