US ZIP Code
03878

Somersworth, NH

Strafford County  ·  New Hampshire

● Active
👥 12,145 Population
💰 $79,691 Median HH Income
≈ Avg ↑ 19% since 2019
🎂 38.3 Median Age ↑ 4% since 2019
🏠 $295,200 Median Home Value
≈ Avg ↑ 60% since 2019
🎓 45.4% College Grads
▲ 17% above avg
📊 2.5% Unemployment
▼ 49% below avg ↓ 48% since 2019
ZIP Code Details
ZIP Code03878
CitySomersworth
StateNew Hampshire (NH)
CountyStrafford County
Area Code603
Elevation209 ft
Latitude43.253476
Longitude-70.887944
TimezoneNew York (DST)
FIPS33017
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.0% (6,074) Female 50.0% (6,071) ♀

Race & Ethnicity

White: 82.5%Hispanic: 5.7%Black: 2.6%Asian: 2.8%Other: 5.8%Race
White82.5%
Hispanic5.7%
Black2.6%
Asian2.8%
Other5.8%

Age Breakdown

Under 5
3%
5–17
16%
18–24
6%
25–44
32%
45–64
27%
65+
7%

Key Indicators

Median Age38.3 yrs ↑ 4% since 2019
Avg Household Size2.27
Below Poverty11.4% ▲ 14% above avg
College Grads45.4% ▲ 17% above avg
Unemployment2.5% ▼ 49% below avg
No HS Diploma53 (0.6%)
HS Graduate1,967 (22.6%)
Some College1,523 (17.5%)
Associates1,221 (14%)
Bachelors1,412 (16.2%)
Graduate Degree2,541 (29.1%)

Education

No HS: 0.6%HS Grad: 22.6%Some College: 17.5%Associates: 14%Bachelors: 16.2%Graduate: 29.1%Edu
No HS0.6%
HS Grad22.6%
Some College17.5%
Associates14.0%
Bachelors16.2%
Graduate29.1%
Housing & Income

Housing Tenure

Owner: 62.2%Renter: 37.8%Tenure
Owner62.2%
Renter37.8%

Home Value Distribution

Under $50k
8%
$50k–100k
2%
$100k–150k
3%
$150k–200k
3%
$200k–300k
36%
$300k–500k
44%
Over $500k
4%

Financials

Median HH Income$79,691 ≈ Avg ↑ 19% since 2019
Median Home Value$295,200 ≈ Avg ↑ 60% since 2019
Home/Income Ratio3.7x (nat avg ~3.5x)
Median Rent$1,410/mo ↑ 32% since 2019
Total Units5,722
Vacant Units372
Avg HH Size2.27

Income Distribution

Under $25k
15%
$25k–50k
12%
$50k–75k
17%
$75k–100k
20%
$100k–150k
20%
$150k–200k
9%
Over $200k
7%
Employment & Commute

How People Get to Work

Drove Alone
85%
Public Transit
3%
Work From Home
12%

Commute Time

Under 15 min
30%
15–30 min
41%
30–45 min
15%
Over 45 min
14%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
11%
1960s–1970s
23%
1980s–1990s
7%
2000+
57%

Summary

Total Units5,722
Vacant372
Owner Occupied62.2%
Renter Occupied37.8%
Avg HH Size2.27
Frequently Asked Questions
ZIP code 03878 is in Somersworth, NH, in Strafford County.
ZIP code 03878 is located in New Hampshire (NH).
ZIP code 03878 is in Strafford County, NH.
ZIP 03878 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 03878 is 12,145 people (ACS 2023).
The median household income in ZIP code 03878 is $79,691 (ACS 2023).
The median home value in ZIP 03878 is $295,200 (ACS 2023).
About ZIP Code 03878

ZIP code 03878 is located in Somersworth, New Hampshire, within Strafford County. With a population of 12,145, this is a lightly populated ZIP code with a middle-aged community — the median age is 38.3 years. Economically, 03878 is a middle-income ZIP code: the median household income of $79,691 is near the national average.

Real estate in ZIP code 03878 represents a mid-range housing market. The median home value of $295,200 is near the national average. Renters can expect to pay around $1,410 per month in median rent. Homeownership is strong here — 62.2% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 60% since 2019.

The population of 03878 is primarily White (82.54%). Residents are well-educated — 45.4% hold a bachelor's degree or higher, which is above the national average. Poverty affects some residents at 11.4%. Household income has grown by 19% since 2019.

The unemployment rate in 03878 stands at 2.5%, which is below the national average. About 11% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 78%.

Overall, ZIP code 03878 in Somersworth, NH is characterized as middle-income, well-educated, a middle-aged community, and predominantly owner-occupied. With 12,145 residents, a median household income of $79,691, and a median home value of $295,200, it offers a clear picture of life in this part of New Hampshire.