US ZIP Code
53548

Janesville, WI

Rock County  ·  Wisconsin

● Active
👥 20,509 Population ↑ 7% since 2019
💰 $74,696 Median HH Income
≈ Avg ↑ 39% since 2019
🎂 40.8 Median Age ↑ 7% since 2019
🏠 $226,600 Median Home Value
▼ 19% below avg ↑ 59% since 2019
🎓 40.3% College Grads
≈ Avg
📊 5.4% Unemployment
▲ 10% above avg
ZIP Code Details
ZIP Code53548
CityJanesville
StateWisconsin (WI)
CountyRock County
Area Code353/608
Elevation953 ft
Latitude42.689322
Longitude-89.131287
TimezoneChicago (DST)
FIPS55105
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.0% (10,257) Female 50.0% (10,252) ♀

Race & Ethnicity

White: 84.1%Hispanic: 7.2%Black: 3.5%Asian: 1.9%Other: 3.1%Race
White84.1%
Hispanic7.2%
Black3.5%
Asian1.9%
Other3.1%

Age Breakdown

Under 5
5%
5–17
16%
18–24
9%
25–44
25%
45–64
28%
65+
8%

Key Indicators

Median Age40.8 yrs ↑ 7% since 2019
Avg Household Size2.41
Below Poverty10.7% ≈ Avg
College Grads40.3% ≈ Avg
Unemployment5.4% ▲ 10% above avg
No HS Diploma143 (1%)
HS Graduate4,501 (32.5%)
Some College1,763 (12.7%)
Associates1,869 (13.5%)
Bachelors1,796 (12.9%)
Graduate Degree3,798 (27.4%)

Education

No HS: 1%HS Grad: 32.5%Some College: 12.7%Associates: 13.5%Bachelors: 12.9%Graduate: 27.4%Edu
No HS1.0%
HS Grad32.5%
Some College12.7%
Associates13.5%
Bachelors12.9%
Graduate27.4%
Housing & Income

Housing Tenure

Owner: 67.9%Renter: 32.2%Tenure
Owner67.9%
Renter32.2%

Home Value Distribution

Under $50k
3%
$50k–100k
6%
$100k–150k
15%
$150k–200k
14%
$200k–300k
34%
$300k–500k
20%
Over $500k
8%

Financials

Median HH Income$74,696 ≈ Avg ↑ 39% since 2019
Median Home Value$226,600 ▼ 19% below avg ↑ 59% since 2019
Home/Income Ratio3.0x (nat avg ~3.5x)
Median Rent$999/mo ↑ 25% since 2019
Total Units8,894
Vacant Units458
Avg HH Size2.41

Income Distribution

Under $25k
15%
$25k–50k
16%
$50k–75k
18%
$75k–100k
20%
$100k–150k
19%
$150k–200k
9%
Over $200k
4%
Employment & Commute

How People Get to Work

Drove Alone
88%
Public Transit
1%
Walked
1%
Work From Home
10%

Commute Time

Under 15 min
40%
15–30 min
34%
30–45 min
12%
Over 45 min
14%
Housing Stock

Year Built

Before 1940
5%
1940s–1950s
13%
1960s–1970s
12%
1980s–1990s
12%
2000+
58%

Summary

Total Units8,894
Vacant458
Owner Occupied67.9%
Renter Occupied32.2%
Avg HH Size2.41
Frequently Asked Questions
ZIP code 53548 is in Janesville, WI, in Rock County.
ZIP code 53548 is located in Wisconsin (WI).
ZIP code 53548 is in Rock County, WI.
ZIP 53548 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 53548 is 20,509 people (ACS 2023).
The median household income in ZIP code 53548 is $74,696 (ACS 2023).
The median home value in ZIP 53548 is $226,600 (ACS 2023).
About ZIP Code 53548

ZIP code 53548 is located in Janesville, Wisconsin, within Rock County. With a population of 20,509, this is a moderately populated ZIP code with a middle-aged community — the median age is 40.8 years. Economically, 53548 is a solidly middle-class ZIP code: the median household income of $74,696 is near the national average.

Real estate in ZIP code 53548 represents an affordable housing market. The median home value of $226,600 is below the national average. Renters can expect to pay around $999 per month in median rent. Homeownership is strong here — 67.9% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 59% since 2019.

The population of 53548 is primarily White (84.12%). Residents are well-educated — 40.3% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 10.7%. Household income has grown by 39% since 2019.

The unemployment rate in 53548 stands at 5.4%, which is near the national average. As in most parts of the country, driving alone is the dominant commute mode at 78%.

Overall, ZIP code 53548 in Janesville, WI is characterized as solidly middle-class, well-educated, a middle-aged community, and predominantly owner-occupied. With 20,509 residents, a median household income of $74,696, and a median home value of $226,600, it offers a clear picture of life in this part of Wisconsin.