Charlestown, NH ZIP code
The ZIP code for Charlestown, New Hampshire is 03603. It is in Sullivan County.
- Population in these ZIPs
- 5,238
- Avg. median income
- $56,700population-weighted
- Typical home value
- $306,800population-weighted
- Metro area
- Lebanon-Claremont, NH-VT
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Charlestown, NH ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 03603 | 5,238 | $56,731 | $306,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Charlestown
- Acworth 3 mi
- South Acworth 7 mi
- Alstead 8 mi
- North Walpole 8 mi
- Claremont 8 mi
- Lempster 10 mi
- Marlow 11 mi
- Walpole 12 mi
- Newport 12 mi
- Goshen 14 mi
- Washington 15 mi
- Gilsum 15 mi
Frequently asked questions
What is the ZIP code for Charlestown, NH?
The ZIP code for Charlestown, NH is 03603.
What county is Charlestown, New Hampshire in?
Charlestown ZIP codes are in Sullivan County.