🇺🇸 United States ZIP Code

STANDARD

03837

Gilmanton Iron Works

ZIP Code 03837 is a standard zip code serving Gilmanton Iron Works, Gilmanton Iron Works, New Hampshire (NH), in Belknap County, United States. It has an estimated population of 1,519 with a median household income of $61,150. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: New Hampshire (NH)
County: Belknap
City: Gilmanton Iron Works
Timezone: America/New_York

Coordinates

Latitude: 43.446600
Longitude: -71.299500

Geographic Details

Land Area: 20.16 mi²
Water Area: 0.66 mi²
Population Density: 75.0 people per mi² (45th percentile)
Bounding Box: 43.463119°N, 43.357645°S, -71.265867°E, -71.399209°W

With 1,519 residents spread across 20.16 square miles, this area has a population density of 75.0 people per square mile.

Demographics

1,519

Population

35th percentile

$61,150

Median Income

75th percentile

$254,000

Median Home Value

80th percentile

20.16 mi²

Land Area

The median household income in 03837 is $61,150, and the median home value is $254,000. This places the area in the top 25% nationally for household income.

Housing

839

Total Units

554

Occupied Units

66.0%

Occupancy Rate

Similar ZIP Codes in New Hampshire

ZIP codes with similar median household income in New Hampshire.

03838

Glen

$54,926

03809

Alton

$63,202

03874

Seabrook

$54,167

03842

Hampton

$67,251

03104

Manchester

$60,468

03253

Meredith

$57,067

03849

Madison

$53,523

03608

Walpole

$52,976

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.