County ProfileNH
Strafford County
Population: 130,889 · 18 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
130,889
People
Median age
38.2
Housing
Total households
52,080
Income
Median household income
$88,570
Housing
Total housing units
56,609
Employment
Employment rate
65.2%
Education
Bachelor’s degree or higher
39.3%
Healthcare
Insured population
94.8%
County details
Local time 04:29:54(ET)| Name | Strafford |
|---|---|
| Total ZIP codes | 18total |
| ZIP codes (by type) | 15 Standard2 PO Box1 Unique |
| Area code | 603 |
| Timezone | Eastern Time (ET) |
| Coordinates | 43.2932725, -71.0355891 |
| Land area | 367.5 sq miles(951.8 km²) |
Map of Strafford county, New Hampshire with ZIP codes
Cities and Communities in Strafford County
Compare the largest cities in Strafford County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Dover | 32,741 | $94,829 | 3ZIPs |
| Rochester | 32,492 | $80,836 | 4ZIPs |
| Somersworth | 11,855 | $74,504 | 1ZIPs |
| Durham | 11,147 | $112,070 | 1ZIPs |
| Farmington | 3,824 | $55,029 | 1ZIPs |
| Milton | 593 | $48,125 | 1ZIPs |
| Milton Mills | 313 | $250,001 | 1ZIPs |
| Barrington | — | — | 1ZIPs |
| Lee | — | — | 1ZIPs |
| Madbury | — | — | 1ZIPs |
| New Durham | — | — | 1ZIPs |
| Rollinsford | — | — | 1ZIPs |
| Strafford | — | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Strafford County
Review the most populated postal areas across Strafford County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 03820 | Dover | — | — |
| 03821 | Dover | — | — |
| 03822 | Dover | — | — |
| 03823 | Madbury | — | — |
| 03824 | Durham | — | — |
| 03825 | Barrington | — | — |
| 03835 | Farmington | — | — |
| 03839 | Rochester | — | — |
| 03851 | Milton | — | — |
| 03852 | Milton Mills | — | — |
| 03855 | New Durham | — | — |
| 03861 | Lee | — | — |
| 03866 | Rochester | — | — |
| 03867 | Rochester | — | — |
| 03868 | Rochester | — | — |
| 03869 | Rollinsford | — | — |
| 03878 | Somersworth | — | — |
| 03884 | Strafford | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS