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🇺🇸 United States ZIP Code

STANDARD

53546

Janesville

ZIP Code 53546 is a standard zip code serving Janesville, Janesville, Wisconsin (WI), in Rock County, United States. It has an estimated population of 30,648 with a median household income of $56,696. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

$0 National: $37,585 $150K+ $56,696

Location

Country
🇺🇸 United States
State / Province
Wisconsin (WI)
County
Rock
City
Janesville
Timezone
America/Chicago

Coordinates

Latitude
42.668300
Longitude
-89.002500

Geographic Details

Land Area
82.65 mi²
Water Area
0.38 mi²
Population Density
371.0 people per mi² (65th percentile)
Bounding Box
42.758910°N, 42.582857°S, -88.820403°E, -89.071469°W

With 30,648 residents spread across 82.65 square miles, this area has a population density of 371.0 people per square mile.

Demographics

30,648

Population

90th percentile

$56,696

Median Income

65th percentile

$138,000

Median Home Value

55th percentile

82.65 mi²

Land Area

The median household income in 53546 is $56,696, and the median home value is $138,000.

Housing

13,110

Total Units

12,240

Occupied Units

93.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Janesville, WI.

53545

Janesville

 53547

Janesville

 53548

Janesville

Similar ZIP Codes in Wisconsin

ZIP codes with similar median household income in Wisconsin.

53006

Brownsville

$60,833

 53010

Campbellsport

$61,231

 53011

Cascade

$59,071

 53014

Chilton

$54,664

 53015

Cleveland

$58,929

 53019

Eden

$52,417

 53020

Elkhart Lake

$58,234

 53023

Glenbeulah

$57,083

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.