ZIP code · Cornish Flat · New Hampshire · United States
ZIP code 03746 — Cornish Flat
ZIP code 03746 serves Cornish Flat, New Hampshire.
- Postal code
- 03746Single source Value from one source, not cross-checked.
- City
- Cornish Flat
- County
- Sullivan
- State
- New Hampshire
- Country
- United States
- Coordinates
- 43.4973, -72.2795 — precision precise (locality)
View on OpenStreetMap - 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 03746 with another ZIP · ZIPs within 25 miles · distance from 03746
Nearby localities
Climate — monthly normals
Warmest month Jul (avg high 80°F), coldest Jan (avg low 8°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 32 | 40 | 55 | 67 | 75 | 80 | 78 | 71 | 57 | 45 | 34 |
| Avg low °F | 8 | 10 | 18 | 30 | 42 | 52 | 57 | 55 | 48 | 37 | 27 | 16 |
NOAA 1991–2020 climate normals from the nearest station: N HARTLAND LAKE (8.4 mi) · NOAA NCEI
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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page