ZIP code · Charlestown · New Hampshire · United States
ZIP code 03603 — Charlestown
ZIP code 03603 serves Charlestown, New Hampshire.
- Postal code
- 03603Single source Value from one source, not cross-checked.
- City
- Charlestown
- County
- Sullivan FIPS 33019
- State
- New Hampshire
- Country
- United States
- Coordinates
- 43.2573, -72.4064 — precision precise (locality)
View on OpenStreetMap - Population
- 5,272 (ZCTA, ACS 5-year)
- Population density
- 119 / sq mi
- Land area
- 44.3 sq mi (114.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $55,266
- Per-capita income
- $34,251
- Median age
- 48.2
- Households
- 1,968
- Housing units
- 2,240
- Median home value
- $181,500
- Median gross rent
- $1,169 / 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
- 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 03603 with another ZIP · ZIPs within 25 miles · distance from 03603
Nearby localities
Map of ZIP code 03603
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 9°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 34 | 42 | 56 | 70 | 77 | 83 | 81 | 73 | 60 | 46 | 35 |
| Avg low °F | 9 | 11 | 20 | 31 | 42 | 52 | 57 | 55 | 47 | 36 | 27 | 18 |
| Precip in | 2.7 | 2.5 | 2.7 | 3.9 | 3.8 | 4.0 | 4.2 | 3.9 | 4.1 | 5.1 | 3.2 | 3.8 |
NOAA 1991–2020 climate normals from the nearest station: N SPRINGFIELD LAKE (7.5 mi) · NOAA NCEI
Places in ZIP 03603
- 3 schools
- 1 supermarkets
- 2 parks
- 2 playgrounds
- 1 libraries
- 1 post offices
- 3 places of worship
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