US ZIP Code
03257

New London, NH

Merrimack County  ·  New Hampshire

● Active
👥 4,503 Population
💰 $89,750 Median HH Income
▲ 18% above avg ↓ 2% since 2019
🎂 45.3 Median Age ↑ 8% since 2019
🏠 $469,000 Median Home Value
▲ 68% above avg ↑ 26% since 2019
🎓 78.3% College Grads
▲ 102% above avg
📊 2.8% Unemployment
▼ 44% below avg ↑ 24% since 2019
ZIP Code Details
ZIP Code03257
CityNew London
StateNew Hampshire (NH)
CountyMerrimack County
Area Code603
Elevation1,254 ft
Latitude43.417721
Longitude-71.990609
TimezoneNew York (DST)
FIPS33013
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 46.0% (2,071) Female 54.0% (2,432) ♀

Race & Ethnicity

White: 90.4%Hispanic: 2.1%Black: 1.2%Asian: 2.1%Other: 4.2%Race
White90.4%
Hispanic2.1%
Black1.2%
Asian2.1%
Other4.2%

Age Breakdown

Under 5
4%
5–17
10%
18–24
22%
25–44
14%
45–64
17%
65+
13%

Key Indicators

Median Age45.3 yrs ↑ 8% since 2019
Avg Household Size2.24
Below Poverty2.2% ▼ 78% below avg
College Grads78.3% ▲ 102% above avg
Unemployment2.8% ▼ 44% below avg
HS Graduate233 (8.6%)
Some College71 (2.6%)
Associates287 (10.6%)
Bachelors398 (14.6%)
Graduate Degree1,728 (63.6%)

Education

HS Grad: 8.6%Some College: 2.6%Associates: 10.6%Bachelors: 14.6%Graduate: 63.6%Edu
HS Grad8.6%
Some College2.6%
Associates10.6%
Bachelors14.6%
Graduate63.6%
Housing & Income

Housing Tenure

Owner: 86.7%Renter: 13.3%Tenure
Owner86.7%
Renter13.3%

Home Value Distribution

Under $50k
1%
$50k–100k
1%
$100k–150k
5%
$150k–200k
3%
$200k–300k
17%
$300k–500k
30%
Over $500k
44%

Financials

Median HH Income$89,750 ▲ 18% above avg ↓ 2% since 2019
Median Home Value$469,000 ▲ 68% above avg ↑ 26% since 2019
Home/Income Ratio5.2x (nat avg ~3.5x)
Median Rent$1,569/mo ↑ 25% since 2019
Total Units2,395
Vacant Units767
Avg HH Size2.24

Income Distribution

Under $25k
9%
$25k–50k
12%
$50k–75k
13%
$75k–100k
15%
$100k–150k
18%
$150k–200k
12%
Over $200k
20%
Employment & Commute

How People Get to Work

Drove Alone
78%
Walked
5%
Work From Home
17%

Commute Time

Under 15 min
33%
15–30 min
14%
30–45 min
29%
Over 45 min
23%
Housing Stock

Year Built

Before 1940
3%
1940s–1950s
5%
1960s–1970s
23%
1980s–1990s
12%
2000+
57%

Summary

Total Units2,395
Vacant767
Owner Occupied86.7%
Renter Occupied13.3%
Avg HH Size2.24
Frequently Asked Questions
ZIP code 03257 is in New London, NH, in Merrimack County.
ZIP code 03257 is located in New Hampshire (NH).
ZIP code 03257 is in Merrimack County, NH.
ZIP 03257 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 03257 is 4,503 people (ACS 2023).
The median household income in ZIP code 03257 is $89,750 (ACS 2023).
The median home value in ZIP 03257 is $469,000 (ACS 2023).
About ZIP Code 03257

ZIP code 03257 is located in New London, New Hampshire, within Merrimack County. With a population of 4,503, this is a lightly populated ZIP code with a mature community — the median age is 45.3 years. Economically, 03257 is a middle-income ZIP code: the median household income of $89,750 is above the national average.

Real estate in ZIP code 03257 represents a premium housing market. The median home value of $469,000 is significantly above the national average. Renters can expect to pay around $1,569 per month in median rent. Homeownership is strong here — 86.7% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 26% since 2019.

The population of 03257 is primarily White (90.43%). Residents are highly educated — 78.3% hold a bachelor's degree or higher, which is more than double the national average. Poverty affects a relatively small share of residents at 2.2%. Household income has declined by 2% since 2019.

The unemployment rate in 03257 stands at 2.8%, which is below the national average. About 15% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 71%.

Overall, ZIP code 03257 in New London, NH is characterized as middle-income, highly educated, a mature community, and predominantly owner-occupied. With 4,503 residents, a median household income of $89,750, and a median home value of $469,000, it offers a clear picture of life in this part of New Hampshire.