Zip Code 53545
Janesville, Wisconsin — Rock County
📍 ZIP code 53545 is in Janesville, Rock County, Wisconsin.
ZIP code 53545 is located in Janesville, Rock County, Wisconsin. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 23,937. The area code for ZIP code 53545 is 608.
Quick Answer
Zip code 53545 is in Janesville, Wisconsin (Rock County). It has a population of 23,937, median household income of $70,730, and median home value of $204,000.
Population
23,937
Income
$70,730
Home Value
$204,000
Climate
83°F / 12°F
About Zip Code 53545
Zip code 53545 is located in Janesville, Wisconsin, within Rock County. Home to approximately 23,937 residents, this area sits at an elevation of 909 ft and falls within the Central (CST/CDT) timezone. The local area code is 608.
The median household income is $70,730 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $204,000, and the cost of living index is 76 (24% below the national average of 100).
Summers average a high of 83°F while winters drop to 12°F. The area receives about 37 in of rain and 37 in of snow annually. The zip code covers 24.8 square miles of land area and 0.4 square miles of water.
Key Statistics
23,937
$70,730
$204,000
Central (CST/CDT)
608
909 ft
24.8 sq mi
41.1
11,170
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Compare With Nearby Zip Codes
| Metric | 53545 | 53563 | 53546 | 53534 | 53537 | 53536 |
|---|---|---|---|---|---|---|
| City | Janesville, WI | Milton, WI | Janesville, WI | Edgerton, WI | Footville, WI | Evansville, WI |
| Population | 23,937 | 11,468 | 29,482 | 12,344 | 818 | 9,449 |
| Median Income | $70,730 | $89,397 | $73,430 | $94,250 | $56,375 | $83,944 |
| Home Value | $204,000 | $270,800 | $220,100 | $280,100 | $147,400 | $274,600 |
| Cost of Living | 76 | 99 | 80 | 102 | 62 | 99 |
| Median Age | 41.1 | 42.5 | 41.3 | 40.1 | 46.4 | 39 |
Cost of Living
100 = National Average. Janesville's cost of living is 24% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.9x
Demographics
Zip code 53545 has a population of 23,937 people with a median age of 41.1. There are 11,170 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Janesville (53545) population trend from 2010 to 2024
↑ 8.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
12°F
37 in
37 in
Janesville experiences warm summers with average highs around 83°F. Winters are cold with lows averaging 12°F. With 37 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$204,000
Median Household Income
$70,730
With 11,170 housing units across 24.8 square miles, 53545 has a housing density of 450 units per square mile. The home price-to-income ratio is 2.9x.
Location & Geography
Latitude
42.7387°
Longitude
-89.0402°
Land Area
24.8 sq mi
Water Area
0.4 sq mi
Nearby Zip Codes
Zip codes closest to 53545 (Janesville, WI) with distances:
All Zip Codes in Janesville, WI
Other zip codes serving Janesville:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 53545's $70,730. A way to compare Janesville to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 53545 (Janesville, WI). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Janesville, Wisconsin?
Janesville, Wisconsin uses zip code 53545 along with 1 other zip codes.
What county is zip code 53545 in?
Zip code 53545 is located in Rock County, Wisconsin.
What is the population of zip code 53545?
The population of zip code 53545 is 23,937 with a median age of 41.1.
Is 53545 in Janesville, Wisconsin?
Yes, zip code 53545 is in Janesville, Rock County, Wisconsin. The area code is 608.
Frequently Asked Questions
What city is zip code 53545 in?
Zip code 53545 is in Janesville, Wisconsin. It is part of Rock County and uses the Central (CST/CDT) timezone.
What is zip code 53545?
Zip code 53545 is a U.S. postal code in Janesville, Wisconsin (Rock County). It has a population of 23,937 and covers 24.8 square miles.
What is the population of zip code 53545?
The population of zip code 53545 (Janesville, WI) is 23,937 with a median age of 41.1. There are approximately 11,170 housing units in this area.
What is the median income in zip code 53545?
The median household income in zip code 53545 (Janesville, WI) is $70,730 per year. The cost of living index is 76 (100 = national average).
What is the average home price in zip code 53545?
The median home value in zip code 53545 (Janesville, WI) is $204,000. The cost of living index is 76 compared to the national average of 100.
What county is zip code 53545 in?
Zip code 53545 is located in Rock County, Wisconsin. The primary city is Janesville.
What is the area code for zip code 53545?
Zip code 53545 in Janesville, WI uses area code 608. It is located in the Central (CST/CDT) timezone.
Is zip code 53545 a good place to live?
Zip code 53545 (Janesville, WI) has a cost of living index of 76 (100 = national average), a median household income of $70,730, and median home values of $204,000. The median age is 41.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 53545?
The cost of living index for zip code 53545 (Janesville, WI) is 76, where 100 represents the national average. This area is below the national average. Median home value: $204,000.
What schools serve zip code 53545?
Zip code 53545 in Janesville, Wisconsin is served by the local school district of Rock County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.