🇺🇸 United States ZIP Code

STANDARD

58237

Grafton

ZIP Code 58237 is a standard zip code serving Grafton, Grafton, North Dakota (ND), in Walsh County, United States. It has an estimated population of 5,499 with a median household income of $47,737. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: North Dakota (ND)
County: Walsh
City: Grafton
Timezone: America/Chicago

Coordinates

Latitude: 48.412200
Longitude: -97.410600

Geographic Details

Land Area: 245.95 mi²
Water Area: 0.21 mi²
Population Density: 22.0 people per mi² (25th percentile)
Bounding Box: 48.543053°N, 48.296147°S, -97.131015°E, -97.625030°W

With 5,499 residents spread across 245.95 square miles, this area has a population density of 22.0 people per square mile.

Demographics

5,499

Population

60th percentile

$47,737

Median Income

45th percentile

$69,700

Median Home Value

10th percentile

245.95 mi²

Land Area

The median household income in 58237 is $47,737, and the median home value is $69,700.

Housing

2,521

Total Units

2,243

Occupied Units

89.0%

Occupancy Rate

Similar ZIP Codes in North Dakota

ZIP codes with similar median household income in North Dakota.

58425

Cooperstown

$50,139

58474

Oakes

$49,851

58421

Carrington

$51,154

58623

Bowman

$53,601

58267

Northwood

$50,833

58257

Mayville

$44,792

58356

New Rockford

$42,969

58763

New Town

$51,649

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.