🇺🇸 United States ZIP Code

STANDARD

52302

Marion

ZIP Code 52302 is a standard zip code serving Marion, Marion, Iowa (IA), in Linn County, United States. It has an estimated population of 36,980 with a median household income of $63,817. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Iowa (IA)
County: Linn
City: Marion
Timezone: America/Chicago

Coordinates

Latitude: 42.041100
Longitude: -91.594100

Geographic Details

Land Area: 74.17 mi²
Water Area: 0.05 mi²
Population Density: 499.0 people per mi² (70th percentile)
Bounding Box: 42.145161°N, 41.975945°S, -91.472386°E, -91.702071°W

With 36,980 residents spread across 74.17 square miles, this area has a population density of 499.0 people per square mile.

Demographics

36,980

Population

90th percentile

$63,817

Median Income

75th percentile

$150,800

Median Home Value

55th percentile

74.17 mi²

Land Area

The median household income in 52302 is $63,817, and the median home value is $150,800. This places the area in the top 25% nationally for household income.

Housing

15,868

Total Units

14,887

Occupied Units

93.8%

Occupancy Rate

Similar ZIP Codes in Iowa

ZIP codes with similar median household income in Iowa.

50118

Hartford

$59,453

50171

Montezuma

$58,355

50624

Dike

$66,833

50644

Independence

$58,016

50156

Madrid

$56,595

52253

Lisbon

$70,163

52318

Norway

$54,438

50212

Ogden

$55,263

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.