🇺🇸 United States ZIP Code

STANDARD

51004

Anthon

ZIP Code 51004 is a standard zip code serving Anthon, Anthon, Iowa (IA), in Woodbury County, United States. It has an estimated population of 1,033 with a median household income of $43,333. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 42.387000
Longitude: -95.894800

Geographic Details

Land Area: 81.86 mi²
Water Area: 0.32 mi²
Population Density: 13.0 people per mi² (15th percentile)
Bounding Box: 42.443795°N, 42.301863°S, -95.786493°E, -96.058304°W

With 1,033 residents spread across 81.86 square miles, this area has a population density of 13.0 people per square mile.

Demographics

1,033

Population

25th percentile

$43,333

Median Income

35th percentile

$78,900

Median Home Value

15th percentile

81.86 mi²

Land Area

The median household income in 51004 is $43,333, and the median home value is $78,900.

Housing

517

Total Units

456

Occupied Units

88.2%

Occupancy Rate

Similar ZIP Codes in Iowa

ZIP codes with similar median household income in Iowa.

51561

Pacific Junction

$41,250

52240

Iowa City

$41,405

52777

Wheatland

$47,235

52404

Cedar Rapids

$45,973

52151

Lansing

$39,857

50014

Ames

$37,661

52591

Sigourney

$39,741

52627

Fort Madison

$43,673

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.