53545 ZIP Code — Janesville, WI
Rock County, Wisconsin
ZIP code 53545 is located in Janesville, Wisconsin, within Rock County. It covers approximately 22.51 square miles and serves a population of 24,037 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 608.
About ZIP code 53545
The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $184,300. Owner-occupancy sits near the national average at 65%.
Median household income is $68,849. 35% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.
Educational attainment is near the national average, with 30% of residents holding a bachelor's degree or higher.
24,037
population
22.51
sq mi land
Standard
ZIP type
Central (CT)
timezone
53545 ZIP code map
Cities in ZIP code 53545
Below are the cities the US Postal Service accepts for ZIP code 53545. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Janesville | Preferred |
Nearby ZIP codes
53548 Janesville (4.8 mi)
53546 Janesville (6.8 mi)
53563 Milton (7.1 mi)
53534 Edgerton (8.8 mi)
53536 Evansville (10.5 mi)
53576 Orfordville (11.7 mi)
53511 Beloit (12 mi)
53505 Avalon (12.1 mi)
53525 Clinton (14.5 mi)
53589 Stoughton (16.1 mi)
53538 Fort Atkinson (17.3 mi)
53114 Darien (17.4 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 24,037 |
| Population density | 1,068 / sq mi |
| State FIPS | 55 |
| County FIPS | 105 |
| Geography | |
|---|---|
| Land area | 22.51 sq mi |
| Water area | 0.35 sq mi |
| Latitude | 42.7283 |
| Longitude | -89.0503 |
| Timezone | Central (CT) |
| Area code | 608 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 41.7% | 42.6% | 39.4% |
| $50k – $100k | 35.7% | 34.1% | 33.0% |
| $100k – $200k | 20.3% | 20.6% | 22.4% |
| Over $200k | 2.3% | 2.7% | 5.2% |
Demographics & statistics
24,037
Population
1,068
People per sq mi
40.6
Median age
$68,849
Median household income
$39,061
Per capita income
$184,300
Median home value
$971
Median monthly rent
65.1%
Home ownership
9.5%
Poverty rate
3.8%
Unemployment
7,378
Housing units
29.6%
Bachelor's or higher
Age distribution
Male
Female
667
Under 5
667
683
5–9
683
675
10–14
676
752
15–19
752
716
20–24
716
1,678
25–34
1,679
1,592
35–44
1,593
1,349
45–54
1,350
776
55–59
776
817
60–64
818
1,224
65–74
1,226
702
75–84
703
383
85+
384
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 5,028 | 20.9% |
| 18 and over | 19,009 | 79.1% |
| 65 and over | 4,622 | 19.2% |
| Median age | 40.6 years | |
Race & ethnicity
White
86.7%
Black or African American
5.3%
Two or more races
4%
Hispanic or Latino
2.1%
Asian
1.4%
Other race
0.3%
| Group | Count | % |
|---|---|---|
| White | 21,291 | 86.7% |
| Black or African American | 1,307 | 5.3% |
| Two or more races | 993 | 4% |
| Hispanic or Latino | 527 | 2.1% |
| Asian | 355 | 1.4% |
| Other race | 82 | 0.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 41.7% | 42.6% | 39.4% |
| $50k – $100k | 35.7% | 34.1% | 33.0% |
| $100k – $200k | 20.3% | 20.6% | 22.4% |
| Over $200k | 2.3% | 2.7% | 5.2% |
Under $10k
4.2%
$10k–$15k
3.0%
$15k–$25k
7.6%
$25k–$35k
6.3%
$35k–$50k
12.4%
$50k–$75k
20.8%
$75k–$100k
17.5%
$100k–$150k
16.3%
$150k–$200k
7.7%
$200k+
4.1%
| Range | % of households |
|---|---|
| Under $10k | 4.2% |
| $10k–$15k | 3.0% |
| $15k–$25k | 7.6% |
| $25k–$35k | 6.3% |
| $35k–$50k | 12.4% |
| $50k–$75k | 20.8% |
| $75k–$100k | 17.5% |
| $100k–$150k | 16.3% |
| $150k–$200k | 7.7% |
| $200k+ | 4.1% |
| Median income | $68,849 |
Housing
Home values
Under $50k
2.3%
$50k–$100k
5.8%
$100k–$150k
16.6%
$150k–$200k
34.8%
$200k–$300k
25.0%
$300k–$500k
10.5%
$500k–$1M
4.7%
$1M+
0.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $184,300 |
| Median rent / month | $971 |
| Owner occupied | 65.1% |
| Renter occupied | 34.9% |
| Vacant | 3.2% |
| Single-family detached | 67.6% |
| Large apartment buildings | 9.9% |
| Mobile homes | 0.4% |
| Median rooms | 5.7 |
| Avg household size (owned) | 2.32 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.5% |
| 2010–2019 | 2.8% |
| 2000–2009 | 4.0% |
| 1990–1999 | 9.6% |
| 1980–1989 | 8.0% |
| 1970–1979 | 16.3% |
| 1960–1969 | 19.3% |
| 1950–1959 | 13.2% |
| 1940–1949 | 5.0% |
| 1939 or earlier | 21.3% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.1% |
| 1 bedroom | 10.0% |
| 2 bedrooms | 33.2% |
| 3 bedrooms | 41.8% |
| 4 bedrooms | 10.6% |
| 5+ bedrooms | 3.3% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 6.7% |
| 1 vehicle | 36.8% |
| 2 vehicles | 38.3% |
| 3 or more | 18.2% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 71.5% |
| Electricity | 23.5% |
| Propane / LP gas | 2.8% |
| Fuel oil | 0.7% |
| Wood | 0.6% |
| No fuel used | 0.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 4,565 | 42.4% |
| Cohabiting couple | 820 | 7.6% |
| Male householder, no spouse | 1,970 | 18.3% |
| Female householder, no spouse | 3,419 | 31.7% |
| Households with children under 18 | 2,765 | 25.7% |
| Households with seniors (65+) | 3,503 | 32.5% |
| Average household size | 2.18 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 36.3% | 27.8% |
| Married | 50.5% | 44.4% |
| Separated | 0.9% | 0.9% |
| Widowed | 2.7% | 10.5% |
| Divorced | 9.6% | 16.4% |
Education
Less than 9th grade
1.2%
Some HS, no diploma
4.9%
HS graduate
33.8%
Some college, no degree
21.3%
Associate's degree
9.3%
Bachelor's degree
19.8%
Graduate / professional
9.7%
| Metric | % |
|---|---|
| HS diploma or higher | 93.9% |
| Bachelor's or higher | 29.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 264 | 5.4% |
| Kindergarten | 258 | 5.3% |
| Elementary school | 2,072 | 42.4% |
| High school | 1,367 | 28.0% |
| College / grad school | 926 | 18.9% |
Employment
Industry of employment
Education & healthcare
22.6%
Manufacturing
17.9%
Retail trade
13.5%
Construction
8.2%
Arts, food & hospitality
7.3%
Professional & management
7.2%
Transportation & utilities
6.8%
Other services
4.0%
Finance & real estate
3.5%
Wholesale trade
3.4%
Public administration
3.2%
Information
1.9%
Agriculture & mining
0.5%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 34.5% |
| Service | 15.6% |
| Sales & office | 19.4% |
| Natural resources & construction | 10.0% |
| Production & transportation | 20.5% |
Employment type
| Type | % |
|---|---|
| Private sector | 85.5% |
| Government | 10.5% |
| Self-employed | 3.9% |
| Unpaid family workers | 0.1% |
Commute
| Method | % |
|---|---|
| Drive alone | 82.6% |
| Carpool | 8.5% |
| Public transit | 0.9% |
| Walk | 1.3% |
| Work from home | 6.1% |
| Other means | 0.6% |
| Avg commute (minutes) | 21.9 |
Poverty
All people
9.5%
Under 18 years
13.3%
18 and over
8.5%
Married-couple families
2.0%
Female-led households
23.1%
Income support
| Source | % of households |
|---|---|
| Social Security | 34.7% |
| Retirement income | 31.8% |
| Supplemental Security | 3.7% |
| Cash public assistance | 2.2% |
| Food stamps / SNAP | 11.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 33.9% |
| High blood pressure | 29.3% |
| High cholesterol | 31.5% |
| Diabetes | 8.6% |
| Heart disease | 5.8% |
| Stroke | 2.8% |
| Asthma | 9.9% |
| Arthritis | 23.0% |
| Kidney disease | 2.7% |
| Pulmonary disease | 6.0% |
| Cancer | 6.7% |
| Behavior / access | % |
|---|---|
| Smoking | 17.5% |
| Binge drinking | 23.2% |
| No physical activity | 20.7% |
| Less than 7 hrs sleep | 30.0% |
| Depression | 20.6% |
| Fair or poor health | 11.6% |
| Poor mental health | 13.5% |
| Poor physical health | 9.5% |
| No health insurance | 10.7% |
| Visited doctor (checkup) | 71.2% |
| Visited dentist | 70.5% |
| Cholesterol screening | 86.6% |
| Teeth loss | 11.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 1,317 | 6.9% |
| Disability | % |
|---|---|
| Any disability | 12.9% |
| Under 18 | 4.5% |
| 18–64 years | 10.0% |
| 65 and over | 31.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 77.8% |
| Public insurance | 35.2% |
| No insurance | 3.9% |
| Uninsured under 19 | 1.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 22,703 | 94.5% |
| Spanish | 339 | 1.5% |
| Other Indo-European | 196 | 0.9% |
| Asian & Pacific Islander | 94 | 0.4% |
| Other languages | 49 | 0.2% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 23,468 | 97.6% |
| Born in same state | 23,293 | 96.9% |
| Born in different state | 17,516 | 72.9% |
| Foreign born | 175 | 0.7% |
| Naturalized citizen | 569 | 2.4% |
| Not a US citizen | 278 | 48.9% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 3,582 | 14.9% |
| French | 2,932 | 12.2% |
| Polish | 2,453 | 10.2% |
| Arab | 1,229 | 5.1% |
| English | 306 | 1.3% |
| Ancestry | Count | % |
|---|---|---|
| German | 142 | 0.6% |
| Dutch | 138 | 0.6% |
| Irish | 40 | 0.2% |
| Norwegian | 18 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 44.8% |
| Internet access | 95.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 53545
What city is ZIP code 53545 in?
ZIP code 53545 is primarily assigned to Janesville, Wisconsin.
What county is ZIP code 53545 in?
ZIP code 53545 falls within Rock County, Wisconsin.
What is the typical home value in ZIP code 53545?
The median home value in ZIP code 53545 is $184,300.
What is the population of ZIP code 53545?
ZIP code 53545 has an estimated population of 24,037 residents, with a density of 1,068 people per square mile.
What is the median household income in ZIP code 53545?
The median household income in ZIP code 53545 is $68,849, below the national median of ~$75,000.
What timezone is ZIP code 53545 in?
ZIP code 53545 observes the CST timezone.