ZIP code · Loudon · New Hampshire · United States
ZIP code 03307 — Loudon
ZIP code 03307 serves Loudon, New Hampshire.
- Postal code
- 03307Single source Value from one source, not cross-checked.
- City
- Loudon
- County
- Merrimack FIPS 33013
- State
- New Hampshire
- Country
- United States
- Coordinates
- 43.3193, -71.4670 — precision precise (locality)
View on OpenStreetMap - Population
- 5,683 (ZCTA, ACS 5-year)
- Population density
- 121 / sq mi
- Land area
- 47 sq mi (121.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $100,141
- Per-capita income
- $42,308
- Median age
- 50.2
- Households
- 2,254
- Housing units
- 2,361
- Median home value
- $315,700
- Median gross rent
- $1,250 / month
- Congressional district
- NH-2 (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
- 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 03307 with another ZIP · ZIPs within 25 miles · distance from 03307
Nearby localities
Map of ZIP code 03307
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 13°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 35 | 44 | 58 | 69 | 78 | 83 | 82 | 74 | 61 | 48 | 37 |
| Avg low °F | 13 | 15 | 23 | 33 | 44 | 54 | 59 | 57 | 49 | 38 | 29 | 20 |
| Precip in | 2.8 | 2.8 | 3.3 | 3.4 | 3.5 | 3.8 | 3.6 | 3.6 | 3.6 | 4.4 | 3.4 | 3.7 |
NOAA 1991–2020 climate normals from the nearest station: CONCORD MUNI AP (8.8 mi) · NOAA NCEI
Places in ZIP 03307
- 1 schools
- 1 hospitals & clinics
- 4 restaurants & cafés
- 1 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 5 places of worship
- 5 gas stations
- 3 police & fire 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