Janesville, MN demographics:
population, income, and more

Total population
2,378
-2.9% year-over-year change
Median household income
$74,643/yr
3.5% year-over-year change
Housing units
1,021
-1.9% year-over-year change

Janesville population

How many people live in Janesville

Janesville is home to 2,378 residents, according to the most recent Census data. Gender-wise, 50.8% of Janesville locals are male, and 49.2% are female.

Total population
2,378
-2.9% year-over-year change
Gender ratio
Male
50.8%
1,208
Female
49.2%
1,170
Value Percent YoY change
Male 1,208 50.8% -3.4%
Female 1,170 49.2% -2.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Janesville is 40, with the population distributed as follows: about 17.5% are children under 15, then 13.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 25.9% of the population, while another 24.6% fall into the 45 to 64 bracket. Finally, around 18.2% are 65 or older.

Median age
39.6
Age breakdown
Under 15
17.5%
15 to 24
13.8%
25 to 44
25.9%
45 to 64
24.6%
Over 65
18.2%
Value Percent YoY change
Under 15 416 17.5% -13.7%
15 to 24 328 13.8% -3.0%
25 to 44 616 25.9% -10.8%
45 to 64 586 24.6% 0.9%
Over 65 432 18.2% 21.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Janesville, 97.6% of the population are US-born citizens, while 1.8% have gained naturalized citizenship. At the same time, 0.7% of residents are non-citizens. As for race, 92% of locals are Caucasian, 0.6% are African American and 1.1% have Asian roots. There’s also a share of 5.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97.6%
Non-U.S.-born citizens
1.8%
Non-citizens
0.7%
Value Percent YoY change
U.S.-born citizens 2,320 97.6% -4.1%
Non-U.S.-born citizens 42 1.8% 40.0%
Non-citizens 16 0.7% N/A
Racial breakdown
White
92%
Black or African American
0.6%
American Indian and Alaska Native
0.3%
Asian
1.1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.2%
Other
0.8%
Value Percent
White 2,188 92%
Black or African American 14 0.6%
American Indian and Alaska Native 7 0.3%
Asian 27 1.1%
Two or more races 123 5.2%
Other 19 0.8%

Households in Janesville

A peek inside Janesville households

Janesville has 932 households, with an average of 2 members in each. Of these, 65.4% are families, while the remaining 34.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
932
-4.2% year-over-year change
Average people per household
2
Non-family households
322
Family households
610
Value Percent YoY change
Non-family households 322 34.6% -5.0%
Family households 610 65.4% -3.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Janesville

The housing landscape of Janesville

Janesville's housing consists of 1,021 units, with 75.9% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 8% of the housing landscape.

Housing units
1,021
-1.9% year-over-year change
Housing types
Value Percent
1 unit, detached 775 75.9%
2 units 34 3.3%
3 or 4 units 49 4.8%
5 to 9 units 20 2%
10 to 19 units 27 2.6%
20 to 49 units 26 2.6%
50 or more units 8 0.8%
Mobile home 82 8%
Homes built since 2020
20
300.0% year-over-year change

The age of buildings in Janesville

In Janesville, the median construction year is 1975. About 16.6% of homes were built before the 1940s, with another 4.2% going up by 1949. Most development happened in the second half of the 20th century. Then, 12% of homes were added from 2000 to 2009, 1.9% between 2010 and 2019, and 2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 169 16.6% -8.7%
Built between 1940 and 1949 43 4.2% -8.5%
Built between 1950 and 1959 106 10.4% 12.8%
Built between 1960 and 1969 110 10.8% 8.9%
Built between 1970 and 1979 174 17% -4.4%
Built between 1980 and 1989 87 8.5% -18.7%
Built between 1990 and 1999 170 16.6% 7.6%
Built between 2000 and 2009 123 12% -15.8%
Built between 2010 and 2019 19 1.9% 18.8%
Built in 2020 or later 20 2% 300.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Janesville occupancy rates

Out of the 932 occupied housing units in Janesville, 84.8% are owner-occupied, while 15.2% are lived in by tenants. Meanwhile, 8.7% of all homes on the local market sit vacant.

Occupied housing units
932
-4.2% year-over-year change
Occupancy breakdown
Renter occupied
142
Owner occupied
790
Value Percent YoY
change
Renter occupied 142 15.2% -7.2%
Owner occupied 790 84.8% -3.7%
Unoccupied housing units
8.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Janesville housing costs

Housing costs in Janesville come to a median of $1,088 per month, while tenants specifically pay a median gross rent of $873.

Median housing costs per month
$1,088/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Janesville
$873/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Janesville

Janesville education at a glance

About 38.6% of the population in Janesville went to high school, while 24.7% pursued college studies. Another 13.6% earned an associate degree and 16.1% hold a bachelor’s. Meanwhile, 5.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 30 1.6% -25.0%
High school diploma 708 38.6% 11.5%
College diploma 454 24.7% 6.6%
Associate degree 249 13.6% -18.4%
Bachelor's degree 295 16.1% -12.7%
Graduate degree 100 5.4% 5.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Janesville

How much people earn in Janesville

The average annual household income in Janesville was $90,815 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +4.8% change from the previous year. At the same time, the median income stood at $74,643, reflecting a +3.5% shift over the same period.

Average household income in Janesville
$90,815/year
4.8% year-over-year change
Median household income in Janesville
$74,643/year
3.5% year-over-year change

Janesville income by age

In Janesville, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $108,385. Those with someone between 45 and 64 in charge, often well established professionally, earn $70,568 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $83,333, while those led by someone over 65, many of whom may be retired, have about $53,580 in earnings. Overall, 96.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $83,333 N/A
25 - 44 $108,385 27.7%
45 - 64 $70,568 1.9%
Over 65 $53,580 15.0%
Above poverty level
2,218
Below poverty level
88
Value Percent YoY
change
Above poverty level 2,218 96.2% -2.3%
Below poverty level 88 3.8% -12.9%

Average renter income in Janesville

To get a better sense of what renters earn on average in Janesville, their median household income was $34,375 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 30.5%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$34,375
Rent-to-income ratio
30.5%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Janesville

Workforce and job types in Janesville

The job market in Janesville is powered by 1,259 working residents, spread across a range of industries and roles. 63.3% of the working population are employed in professional or administrative positions, while 36.7% are in hands-on or service-based jobs. Also, 7.5% run their own businesses, 72.7% are employed by private companies, and 10.2% work in the public sector.

Workforce demographics

Working population
1,259
-7.0% year-over-year change
White collar
797
Blue collar
462
Value Percent YoY change
White collar 797 63.3% -7.1%
Blue collar 462 36.7% -6.8%
Employer type
Self employees
7.5%
Private companies
72.7%
Governmental workers
10.2%
Not for profit companies
9.7%
Value Percent YoY change
Self employees 94 7.5% 6.8%
Private companies 915 72.7% -4.2%
Governmental workers 128 10.2% -19.5%
Not for profit companies 122 9.7% -19.7%
Unemployment rate
3.6%
-21.7% year-over-year change

Available workforce

The unemployment rate in Janesville stands at 3.6%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Janesville

How people get around in Janesville

Commuting methods vary: 92.3% of residents travel by personal vehicle and 1.2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 1,162 92.3% -7.8%
Walk 15 1.2% -40.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Janesville by zipcode?

Zipcode Population Number of households Median income Average income
56048 4,025 1,564 $85,532 $103,091

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FAQs about Janesville demographics 

What is the total population of Janesville?

Janesville has a total population of 2,378 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -2.9% compared to a year ago.

What is the gender ratio in Janesville?

The gender ratio in Janesville is as follows:
  • 50.8% males (1,208 residents)
  • 49.2% females (1,170 residents)

What is the median age in Janesville?

The median age in Janesville is 39.6.

What is the age distribution of the population in Janesville?

The age distribution in Janesville is as follows:
  • Under 15: 17.5% (416 residents)
  • Ages 15-24: 13.8% (328 residents)
  • Ages 25-44: 25.9% (616 residents)
  • Ages 45-64: 24.6% (586 residents)
  • Over 65: 18.2% (432 residents)

What is the racial and ethnic makeup of Janesville?

The racial and ethnic makeup of Janesville is as follows:
  • White: 92% (2,188 residents)
  • Black or African American: 0.6% (14 residents)
  • American Indian and Alaska Native: 0.3% (7 residents)
  • Asian: 1.1% (27 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 5.2% (123 residents)
  • Other: 0.8% (19 residents)

What percentage of the population in Janesville are U.S.-born citizens?

U.S.-born citizens represent 97.6% of the population in Janesville.

How many housing units are there in Janesville?

There are 1,021 housing units in Janesville, reflecting a -1.9% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Janesville and what is the average household size?

Janesville has a total of 932 households, with an average of 2 people in each.

What is the median household income in Janesville?

Janesville has a median household income of $74,643, representing a +3.5% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Janesville?

The employment rate is 96.4% in Janesville, with a workforce of 1,259 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 63.3% (797 residents)
  • Blue-collar workers: 36.7% (462 residents)

Places of employment:
  • Self-employed: 7.5% (94 residents)
  • Private companies: 72.7% (915 residents)
  • Governmental workers: 10.2% (128 residents)
  • Not-for-profit companies: 9.7% (122 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025