🇺🇸 United States ZIP Code

STANDARD

51360

Spirit Lake

ZIP Code 51360 is a standard zip code serving Spirit Lake, Spirit Lake, Iowa (IA), in Dickinson County, United States. It has an estimated population of 8,031 with a median household income of $60,519. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Iowa (IA)
County: Dickinson
City: Spirit Lake
Timezone: America/Chicago

Coordinates

Latitude: 43.426200
Longitude: -95.112300

Geographic Details

Land Area: 111.51 mi²
Water Area: 17.83 mi²
Population Density: 72.0 people per mi² (45th percentile)
Bounding Box: 43.551420°N, 43.342166°S, -94.922638°E, -95.258757°W

With 8,031 residents spread across 111.51 square miles, this area has a population density of 72.0 people per square mile.

Demographics

8,031

Population

65th percentile

$60,519

Median Income

70th percentile

$176,500

Median Home Value

65th percentile

111.51 mi²

Land Area

The median household income in 51360 is $60,519, and the median home value is $176,500.

Housing

6,167

Total Units

3,627

Occupied Units

58.8%

Occupancy Rate

Similar ZIP Codes in Iowa

ZIP codes with similar median household income in Iowa.

50675

Traer

$56,027

52041

Earlville

$60,234

50212

Ogden

$55,263

51024

Hinton

$65,625

51002

Alta

$53,380

50677

Waverly

$64,139

51338

Everly

$57,500

50644

Independence

$58,016

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.