🇺🇸 United States ZIP Code

STANDARD

46373

Saint John

ZIP Code 46373 is a standard zip code serving Saint John, Saint John, Indiana (IN), in Lake County, United States. It has an estimated population of 13,859 with a median household income of $95,733. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Indiana (IN)
County: Lake
City: Saint John
Timezone: America/Chicago

Coordinates

Latitude: 41.449500
Longitude: -87.476400

Geographic Details

Land Area: 10.11 mi²
Water Area: 0.09 mi²
Population Density: 1371.0 people per mi² (80th percentile)
Bounding Box: 41.478977°N, 41.420987°S, -87.426323°E, -87.510371°W

With 13,859 residents spread across 10.11 square miles, this area has a population density of 1371.0 people per square mile.

Demographics

13,859

Population

75th percentile

$95,733

Median Income

95th percentile

$246,200

Median Home Value

80th percentile

10.11 mi²

Land Area

The median household income in 46373 is $95,733, and the median home value is $246,200. This places the area in the top 25% nationally for household income.

Housing

4,915

Total Units

4,769

Occupied Units

97.0%

Occupancy Rate

Similar ZIP Codes in Indiana

ZIP codes with similar median household income in Indiana.

46032

Carmel

$94,045

46037

Fishers

$99,707

46055

Mccordsville

$82,872

46074

Westfield

$94,293

46077

Zionsville

$107,301

46259

Indianapolis

$85,700

46278

Indianapolis

$106,738

46530

Granger

$87,971

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.