Somersworth is a city in Strafford County, New Hampshire, home to about 12,111 people across 9.8 square miles. Its ZIP code is 03878.
Homes sold for a median of $256 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Somersworth. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Somersworth’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Portland International Jetport (PWM)39 miles away |
|---|---|
| Closer regional airport | Portsmouth International Airport at Pease (PSM)12 miles away |
| Nearest city of 250,000+ | Boston, MA64 miles away |
| Nearest city of 1 million+ | New York, NY238 miles away |
Straight-line distances from the center of Somersworth; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Somersworth had 11,855 residents in the 2020 census, up 3% since 2000.
It’s the 25th largest of 242 towns in New Hampshire by population.
Strafford County grew from 39,337 residents in 1900 to 130,889 in 2020.
Strafford County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 15°F. About 41.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Rochester Skyhaven Ap, NH weather station (3 miles away).
39,697 jobs at 2,729 businesses in Strafford County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
261 doctors and other health care providers list an office in Somersworth.
Nearest hospitals
Providers with an office here
| Primary care doctors | 16 |
|---|---|
| Specialist doctors | 34 |
| Dentists | 21 |
| Nurse practitioners and physician assistants | 62 |
| Mental health providers | 66 |
| Physical and occupational therapists | 59 |
| Optometrists | 2 |
| Chiropractors | 1 |
| Pharmacies | 5 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (13 nearby)
Grocery stores (2 nearby)
Pharmacies (2 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1700.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Somersworth School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Idlehurst Elementary SchoolSomersworth | Pre-K–2 | 341 | Public | 0.8 mi |
| Maple Wood Elementary SchoolSomersworth | 3–5 | 285 | Public | 0.2 mi |
| Somersworth Middle SchoolSomersworth | 6–8 | 286 | Public | 0.2 mi |
| Somersworth High SchoolSomersworth | 9–12 | 399 | Public | 0.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Tri-City Christian AcademySomersworth | Pre-K–12 | 167 | Calvinist | 0.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.