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ZIP CODE TABULATION AREA

03257

New Hampshire · 4,484 residents · 23.6 sq mi
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With 4,484 people, ZIP 03257 is a ZIP code in Merrimack County. At a median age of 50.9, this is an older place than the country as a whole. 65% of adults hold a bachelor's degree, against 36% nationally. 91% of homes are owner-occupied. The poverty rate is 0.9%, under the national 12.5%. Median home value sits at $559,000. Among the 27 ZIP codes in Merrimack County, 03257 ranks 15th by median household income.

$107,000
US average: $82,259
$53,645
US average: $44,673
$559,000
US average: $376,019
64.7%
US average: 35.6%
Land area
23.6 sq mi
Age, sex & households
Under 18
13.0%
Age 65+
34.5%
48.2%
51.8%
2.20 people
Race & ethnicity · 2024
2024
White, non-Hispanic89%(3,991)
Black1.2%(52)
Hispanic / Latino2.8%(126)
Asian3.3%(146)
Other3.8%(169)
26
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
5.2
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Merrimack County
Income rank vs other ZIPs
LOWEST15TH OF 27HIGHEST
Adjacent ZIPs
03046$124,348
03106$118,442
03216$88,311
03221$109,803
Frequently asked

How many people live in ZIP code 03257?

ZIP code 03257 has about 4,484 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 03257?

The typical household in ZIP code 03257 earns about $107,000 a year. Half of households make more than that, and half make less.

Is ZIP code 03257 expensive?

In ZIP code 03257, the median home is worth about $559,000, and the typical rent is about $1,594 a month.

How educated are people in ZIP code 03257?

About 64.7% of adults age 25 and over in ZIP code 03257 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 03257?

About 0.9% of people in ZIP code 03257 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024