🇺🇸 United States ZIP Code

STANDARD

03259

North Sandwich

ZIP Code 03259 is a standard zip code serving North Sandwich, North Sandwich, New Hampshire (NH), in Carroll County, United States. It has an estimated population of 368 with a median household income of $59,167. 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: Carroll
City: North Sandwich
Timezone: America/New_York

Coordinates

Latitude: 43.845200
Longitude: -71.385000

Geographic Details

Land Area: 23.40 mi²
Water Area: 0.10 mi²
Population Density: 16.0 people per mi² (15th percentile)
Bounding Box: 43.915549°N, 43.820801°S, -71.350086°E, -71.460421°W

With 368 residents spread across 23.40 square miles, this area has a population density of 16.0 people per square mile.

Demographics

368

Population

10th percentile

$59,167

Median Income

70th percentile

$318,200

Median Home Value

85th percentile

23.40 mi²

Land Area

The median household income in 03259 is $59,167, and the median home value is $318,200.

Housing

291

Total Units

174

Occupied Units

59.8%

Occupancy Rate

Similar ZIP Codes in New Hampshire

ZIP codes with similar median household income in New Hampshire.

03851

Milton

$61,947

03440

Antrim

$64,224

03766

Lebanon

$53,112

03835

Farmington

$51,382

03857

Newmarket

$57,625

03225

Center Barnstead

$62,201

03038

Derry

$64,642

03243

Hill

$56,667

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.