🇺🇸 United States ZIP Code

STANDARD

51234

Boyden

ZIP Code 51234 is a standard zip code serving Boyden, Boyden, Iowa (IA), in Sioux County, United States. It has an estimated population of 1,268 with a median household income of $59,179. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 43.203400
Longitude: -95.982300

Geographic Details

Land Area: 49.91 mi²
Population Density: 25.0 people per mi² (25th percentile)
Bounding Box: 43.258891°N, 43.119657°S, -95.948231°E, -96.080114°W

With 1,268 residents spread across 49.91 square miles, this area has a population density of 25.0 people per square mile.

Demographics

1,268

Population

30th percentile

$59,179

Median Income

70th percentile

$110,500

Median Home Value

40th percentile

49.91 mi²

Land Area

The median household income in 51234 is $59,179, and the median home value is $110,500.

Housing

482

Total Units

459

Occupied Units

95.2%

Occupancy Rate

Similar ZIP Codes in Iowa

ZIP codes with similar median household income in Iowa.

50072

Earlham

$62,500

50130

Jewell

$58,750

50602

Allison

$52,727

52159

Monona

$51,528

50644

Independence

$58,016

50660

New Hartford

$64,511

52306

Mechanicsville

$59,213

51237

George

$50,952

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.