🇺🇸 United States ZIP Code

STANDARD

60543

Oswego

ZIP Code 60543 is a standard zip code serving Oswego, Oswego, Illinois (IL), in Kendall County, United States. It has an estimated population of 36,156 with a median household income of $91,461. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Illinois (IL)
County: Kendall
City: Oswego
Timezone: America/Chicago

Coordinates

Latitude: 41.684900
Longitude: -88.345300

Geographic Details

Land Area: 42.66 mi²
Water Area: 0.42 mi²
Population Density: 847.0 people per mi² (75th percentile)
Bounding Box: 41.726186°N, 41.604040°S, -88.252130°E, -88.413769°W

With 36,156 residents spread across 42.66 square miles, this area has a population density of 847.0 people per square mile.

Demographics

36,156

Population

90th percentile

$91,461

Median Income

90th percentile

$234,700

Median Home Value

80th percentile

42.66 mi²

Land Area

The median household income in 60543 is $91,461, and the median home value is $234,700. This places the area in the top 25% nationally for household income.

Housing

12,624

Total Units

12,027

Occupied Units

95.3%

Occupancy Rate

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

60013

Cary

$97,828

61547

Mapleton

$82,868

60119

Elburn

$90,833

60614

Chicago

$86,215

60083

Wadsworth

$90,093

61548

Metamora

$83,294

60607

Chicago

$80,261

60067

Palatine

$92,212

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.