Checked
ZIP Code 03820
Dover, NH, Strafford County
Population
33,440
Land area
27.3sq mi
People per sq mi
1,226
City
Dover
ZIP 03820 and nearby ZIP codes
ZIP 03820 at a glance
- ZIP 03820 (Dover) is about 7.9 times as dense as New Hampshire as a whole.
- Households here earn a median of $94,897 a year, 4% less than the New Hampshire figure of $99,031.
- A typical owner-occupied home is valued at $436,100 (8% above New Hampshire) and median rent is $1,607 a month.
Local data for ZIP 03820
Counts from official public data
Housing and community stats
ZIP 03820, American Community Survey 2020-2024
Median household income
$94,897
Poverty rate
8.3%
Median home value
$436,100
Prices +7.1% in a year
Median rent
$1,607/mo
Homeownership
52.7%
Bachelor's or higher
52.0%
Median age
36.9
Average commute
22.8 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
902
ZIP Business Patterns 2023
Employees
16,911
$1.05B annual payroll
PPP loans
$96.82M
1,061 loans
Campaign donations
$225K
47% D, 34% R, 2026 cycle
Environment and hazard risk
ZIP 03820, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: ice storm
Storm events since 1996
529
Countywide, mostly heavy snow
Flood insurance policies
198
0.6% of homes, county
July high / Jan low
81° / 15°F
47.8 inches of rain a year
Health statistics
Share of adults in ZIP 03820, CDC PLACES estimates
Obesity
31.8%
U.S. 33.3% -1.5 pts
Diabetes
7.9%
U.S. 12.1% -4.2 pts
Smoking
9.5%
U.S. 12.8% -3.3 pts
Uninsured (18-64)
6.2%
U.S. 11.1% -4.9 pts
Cities in ZIP 03820
ZIP codes near 03820
| Name | Distance | Land area (sq mi) |
|---|---|---|
| 03869Dover | 3.1 mi | 6.7 |
| 03823Durham | 4 mi | 11.6 |
| 03824Durham | 4.8 mi | 22.4 |
| 03878Somersworth | 5.1 mi | 9.8 |
| 03903South Eliot | 5.2 mi | 19.8 |
| 03861Durham | 7.4 mi | 19.7 |
| 03908South Berwick | 7.6 mi | 31.9 |
| 03839Rochester | 7.9 mi | 7.9 |
| 03901Berwick | 8.5 mi | 37.5 |
| 03857Newmarket | 8.6 mi | 12.6 |
| 03801Portsmouth | 8.6 mi | 23.8 |
| 03904Kittery | 8.7 mi | 10.9 |
Frequently asked questions
- What city is ZIP code 03820?
- ZIP code 03820 is in Dover, NH (Strafford County).
- What county is ZIP code 03820 in?
- ZIP code 03820 is mostly in Strafford County, New Hampshire.
- How many people live in ZIP code 03820?
- About 33,440 people live in the 03820 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.