ZIP code · Milton · New Hampshire · United States
ZIP code 03851 — Milton
ZIP code 03851 serves Milton, New Hampshire.
- Postal code
- 03851Single source Value from one source, not cross-checked.
- City
- Milton
- County
- Strafford FIPS 33017
- State
- New Hampshire
- Country
- United States
- Coordinates
- 43.4229, -71.0114 — precision precise (locality)
View on OpenStreetMap - Population
- 4,286 (ZCTA, ACS 5-year)
- Population density
- 163 / sq mi
- Land area
- 26.3 sq mi (68.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $98,750
- Per-capita income
- $39,986
- Median age
- 45.6
- Households
- 1,563
- Housing units
- 1,785
- Median home value
- $282,500
- Median gross rent
- $1,503 / month
- Congressional district
- NH-1 (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °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
- 603Telephone 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 03851 with another ZIP · ZIPs within 25 miles · distance from 03851
Nearby localities
Map of ZIP code 03851
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 35 | 44 | 57 | 67 | 77 | 82 | 81 | 73 | 60 | 48 | 37 |
| Avg low °F | 15 | 17 | 25 | 35 | 45 | 54 | 60 | 58 | 50 | 39 | 31 | 22 |
| Precip in | 2.5 | 2.2 | 3.7 | 3.7 | 3.5 | 3.9 | 3.5 | 3.2 | 3.4 | 4.4 | 3.9 | 3.3 |
NOAA 1991–2020 climate normals from the nearest station: ROCHESTER SKYHAVEN AP (10.9 mi) · NOAA NCEI
Places in ZIP 03851
- 4 schools
- 2 restaurants & cafés
- 1 bars & pubs
- 4 parks
- 1 places of worship
- 2 gas 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