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CITY

Janesville

Iowa · 1,052 residents (2025 est.) · 1.39 sq mi
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The short version

Janesville is wealthier than most US places, with a median household income of $103,542. Population has held roughly steady since 2000. Median home value has roughly tripled since 2000, reaching $221,700. With a median age of 47.0, the population is older than the US median of 38.9. Poverty is rare here, at 5.5% of residents. It sits in the top 10% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 47.0
US median: 38.9
Less educated
29% hold a bachelor's degree
US average: 36%
Less affordable
home values up 62%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
917
+11%since 2000
from 829 in 2000
1990 – 2025
Population density
660 / sq mi
+11%since 2000
from 596 / sq mi in 2000
US average: 281
Median age
47.0
+22%since 2000
from 38.6 in 2000
US average: 38.9

PEP 2025 EST:1,052 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
7688499291K1K1990201020202024Janesville
2024917
1990201020202024
Section 02

Income & economy

Median household income
$103,542
+42%inflation adjusted, since 2000
from $40,060 in 2000
US average: $82,259
1990 – 2024
Per capita income
$42,115
+123%since 2000
from $18,878 in 2000
US average: $44,673
Households earning $100K+
68.1%
+43.0 ptssince 2009
from 25.2% in 2009
US average: 53.3%
Poverty rate
5.5%
+1.9 ptssince 2000
from 3.5% in 2000
US average: 12.5%
Income inequality (Gini)
0.301
−11%since 2010
from 0.339 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade30.9%
US avg: 9.9%
Information9.7%
US avg: 10.8%
Other services9.7%
US avg: 6.7%
Public administration9.7%
US avg: 4.8%
Transportation & warehousing6.2%
US avg: 2.2%
Finance & insurance3%
US avg: 5.9%
Professional, scientific, technical2.4%
US avg: 5.1%
Agriculture, forestry, fishing1.3%
US avg: 1.6%
Construction1.3%
US avg: 1.2%
Wholesale trade0.7%
US avg: 6.9%
Education & health services0.6%
US avg: 0.9%
Arts, entertainment, food0.4%
US avg: 1.9%
Manufacturing0%
US avg: 0.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$221,700
+62%inflation adjusted, since 2000
from $74,900 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$717
+10%inflation adjusted, since 2000
from $358 in 2000
US average: $1,442
Owner-occupied
91.4%
+11.8 ptssince 2000
from 79.7% in 2000
8.6% rent
Vacancy rate
15.9%
+15.9 ptssince 2009
from 0.0% in 2009
US average: 10.0%
Owner cost-burdened
10.3%
−5.0 ptssince 2009
from 15.3% in 2009
US average: 22.9%
Renter cost-burdened
35.5%
+16.8 ptssince 2009
from 18.7% in 2009
US average: 47.4%
Afford Score
2.1
+15%since 2000
from 1.9 in 2000
1990 – 2024
Gentrification Score
74
RELATED:See current rent listings in Janesville on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic99.2%(822)
Black0%(0)
Hispanic / Latino0.2%(2)
Asian0.4%(3)
Other0%
Diversity Score1.5%(12)
2024
White, non-Hispanic97.4%(893)
Black0%(0)
Hispanic / Latino0.4%(4)
Asian1.1%(10)
Other1.1%(10)
Diversity Score6.4%(59)
Diversity Score
6
+327%since 2000
from 2 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
28.9%
+18.9 ptssince 2000
from 10.1% in 2000
US average: 35.6%
High school or higher
98.7%
+15.9 ptssince 2000
from 82.8% in 2000
US average: 89.6%
Graduate degree
4.6%
+1.2 ptssince 2000
from 3.5% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
20.1 min
+54%since 2000
from 13.0 min in 2000
US average: 26.5
Drive alone to work
79.2%
−6.4 ptssince 2009
from 85.5% in 2009
US average: 68.9%
Carpooled to work
9.5%
−3.0 ptssince 2009
from 12.4% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
8.5%
+6.5 ptssince 2009
from 2.0% in 2009
US average: 15.0%
Walked to work
2.9%
+2.9 ptssince 2009
from 0.0% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
1.1%
+0.2 ptssince 2009
from 0.9% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
2.9%
+0.3 ptssince 2011
from 2.6% in 2011
US average: 5.2%
Labor force participation
71.4%
+1.7 ptssince 2011
from 69.7% in 2011
US average: 63.5%
Self-employed
13.3%
+4.9 ptssince 2009
from 8.4% in 2009
US average: 13.1%
Management & professional
32.6%
−27.6 ptssince 2009
from 60.2% in 2009
US average: 42.5%
Section 08

People & community

Male
51.4%
−1.7 ptssince 2009
from 53.1% in 2009
Female
48.6%
+1.7 ptssince 2009
from 46.9% in 2009
Foreign born
1.5%
+1.2 ptssince 2009
from 0.3% in 2009
US average: 14.1%
Veterans
6.9%
−45.7 ptssince 2009
from 52.6% in 2009
US average: 6.2%
With a disability
9.3%
−0.8 ptssince 2012
from 10.1% in 2012
US average: 13.3%
Uninsured
0.4%
−94.1 ptssince 2013
from 94.5% in 2013
US average: 8.4%
Broadband at home
98.3%
+25.9 ptssince 2017
from 72.4% in 2017
US average: 91.0%
English only at home
98.3%
−1.3 ptssince 2016
from 99.6% in 2016
US average: 77.7%
Spanish at home
1.0%
+1.0 ptssince 2016
from 0.0% in 2016
US average: 13.6%
Drill deeper

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Compare Janesville to nearby cities

JANESVILLE VS
Waverly
Income$80,284−22%
Home value$223,300+1%
Population10,561+904%
SEE FULL COMPARISON →
JANESVILLE VS
Cedar Falls
Income$76,987−26%
Home value$263,600+19%
Population41,240+3820%
SEE FULL COMPARISON →
JANESVILLE VS
Waterloo
Income$57,480−44%
Home value$152,600−31%
Population66,919+6261%
SEE FULL COMPARISON →
JANESVILLE VS
Marshalltown
Income$69,068−33%
Home value$127,700−42%
Population27,536+2517%
SEE FULL COMPARISON →
Frequently asked

How many people live in Janesville, Iowa?

Janesville, Iowa has about 917 residents according to the 2024 American Community Survey.

What is the median household income in Janesville, Iowa?

The typical household in Janesville, Iowa earns about $103,542 a year. Half of households make more than that, and half make less.

Is Janesville, Iowa expensive?

In Janesville, Iowa, the median home is worth about $221,700, and the typical rent is about $717 a month.

How educated are people in Janesville, Iowa?

About 28.9% of adults age 25 and over in Janesville, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Janesville, Iowa?

About 5.5% of people in Janesville, Iowa live below the federal poverty line.

Has Janesville, Iowa grown since 1990?

Yes, Janesville, Iowa has grown since 1990. The population has added about 96 residents, a change of about 12 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →