Dover, NH ZIP codes
Dover, New Hampshire has 3 ZIP codes, including 2 PO Box ZIPs. They are in Strafford County.
- Population in these ZIPs
- 33,440
- Avg. median income
- $94,900population-weighted
- Typical home value
- $541,200population-weighted
- Metro area
- Boston-Cambridge-Newton, MA-NH
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Dover, NH ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 03820 | Strafford County | 33,440 | $94,897 | $541,200 |
| 03821 PO Box | Strafford County | — | — | — |
| 03822 PO Box | Strafford County | — | — | — |
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 Dover
- Rollinsford 2 mi
- Madbury 4 mi
- Somersworth 4 mi
- Durham 6 mi
- Barrington 8 mi
- Lee 8 mi
- Rochester 9 mi
- Newmarket 9 mi
- Portsmouth 10 mi
- Greenland 11 mi
- Newfields 12 mi
- New Castle 12 mi
Frequently asked questions
What county is Dover, New Hampshire in?
Dover ZIP codes are in Strafford County.
Which Dover ZIP codes are PO Boxes?
03821 and 03822 are PO Box or single-organization ZIP codes; they have no residential delivery area.