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Somersworth, NH
City in Strafford County, New Hampshire. ZIP codes: 03878.
Population
12,111
Land area
9.8sq mi
People per sq mi
1,235
ZIP codes
1
Somersworth and its ZIP codes
Somersworth at a glance
- Somersworth is about 7.9 times as dense as New Hampshire as a whole.
- By population, it ranks 13th among 100 cities and towns in New Hampshire.
- The median household income is $74,504, 25% below the New Hampshire median of $99,031.
- A typical owner-occupied home is valued at $318,400 (21% below New Hampshire) and median rent is $1,477 a month.
Local data for Somersworth, NH
Counts from official public data
Housing and community stats
Somersworth, NH, American Community Survey 2020-2024
Median household income
$74,504
Poverty rate
11.2%
Median home value
$318,400
Median rent
$1,477/mo
Homeownership
57.8%
Bachelor's or higher
31.4%
Median age
38.4
Average commute
25.8 min
Largest reported origins and ancestries: Irish Americans (2,765), French Americans (1,284), German Americans (1,278).
Economy and federal money
Jobs, pay, income and spending are for Strafford County. PPP loans are for Somersworth.
Unemployment rate
2.6%
Aug 2026, -0.3 pts in a year
Average annual pay
$67,546
46,615 jobs, 2025
Income per person
$69,278
BEA, 2024
Federal spending
$918M
FY 2026, $7,010 per person
PPP loans
$28.92M
267 loans, 3,141 jobs reported
How people get to work
Somersworth, NH, workers 16 and older. American Community Survey 5-year estimates
- Drove alone79.1%
- Carpooled6.3%
- Public transit2.3%
- Walked0.3%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home11.7%
Average one-way commute: 25.8 minutes for people who do not work from home.
Environment and hazard risk
Somersworth, NH, 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
82° / 15°F
41.2 inches of rain a year
Hazards, floods and storm historyCheck a flood zone5 historic places
Health statistics
Share of adults in Somersworth, NH, CDC PLACES estimates
Obesity
34.6%
U.S. 33.3% +1.3 pts
Diabetes
9.5%
U.S. 12.1% -2.6 pts
Smoking
12.5%
U.S. 12.8% about the same
Uninsured (18-64)
7.4%
U.S. 11.1% -3.7 pts
ZIP codes in Somersworth
1 in or overlapping Somersworth. Population shown
Cities near Somersworth
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Berwick, MECensus-designated place | 1.8 mi | 1.6 |
| South Berwick, MECensus-designated place | 5.1 mi | 2.7 |
| DoverCity | 5.1 mi | 26.7 |
| RochesterCity | 5.7 mi | 45 |
| DurhamCensus-designated place | 8.1 mi | 3 |
| North Berwick, MECensus-designated place | 8.7 mi | 3.4 |
| South Eliot, MECensus-designated place | 10 mi | 7.2 |
| MiltonCensus-designated place | 11 mi | 0.8 |
| NewmarketCensus-designated place | 13 mi | 2.3 |
| Kittery, MECensus-designated place | 14 mi | 2.8 |
| FarmingtonCensus-designated place | 14 mi | 6.3 |
| Sanford, MECity | 14 mi | 47.8 |
| York Harbor, MECensus-designated place | 14 mi | 3.2 |
| PortsmouthCity | 15 mi | 15.7 |
| Cape Neddick, MECensus-designated place | 15 mi | 3.7 |
| Kittery Point, MECensus-designated place | 15 mi | 1.9 |
Frequently asked questions
- What county is Somersworth, NH in?
- Somersworth is in Strafford County, New Hampshire.
- What ZIP codes are in Somersworth, NH?
- ZIP codes in or overlapping Somersworth include 03878.
- What is the population of Somersworth, NH?
- About 12,111 people live in Somersworth, based on American Community Survey 5-year estimates.
- What cities are near Somersworth?
- Nearby places include Berwick, ME (1.8 mi), South Berwick, ME (5.1 mi), Dover (5.1 mi), Rochester (5.7 mi), Durham (8.1 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023