United States › Iowa › Janesville CITY · 2020 ACS
Janesville Iowa · 1,034 residents · 1.39 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
Janesville is a city of 1,034 people in Iowa. 83% of homes are owner-occupied. Four-year degrees are less common here than nationally, at 21% of adults. The foreign-born share is 1%. 99% were living in the same home a year earlier. Poverty is uncommon here, at 3.0% of locals.
At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 42.5
US median: 38.8
Less educated
21% hold a bachelor's degree
US average: 33%
Less affordable
home values up 52%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 38.6 in 2000
US average: 38.8
Population, 1990 – 2024
768 849 929 1K 1K 1990 2000 2010 2020 2024 Janesville Age distribution, 2020
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Section 02
Income & economy $72,500
+20%inflation adjusted, since 2000
from $40,060 in 2000
US average: $66,278
from $18,878 in 2000
US average: $35,364
Households earning $100K+
from 25.2% in 2009
US average: 43.9%
from 3.5% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 10.9%
Professional, scientific, technical 2.7%
Transportation & warehousing 2.3%
Arts, entertainment, food 1.7%
Agriculture, forestry, fishing 0%
Education & health services 0%
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$170,800
+52%inflation adjusted, since 2000
from $74,900 in 2000
US average: $265,253
$536
Unchangedinflation adjusted, since 2000
from $358 in 2000
US average: $1,124
from 79.7% in 2000
17.4% rent
2.38 people
+17%since 2009
from 2.04 people in 2009
US average: 2.61
from 2.2 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 99.2%(822)
2020
White, non-Hispanic 95.9%(992)
Hispanic / Latino 1.2%(12)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 4 more ancestry groups with data from 10.1% in 2000
US average: 32.9%
High school or higher
from 82.8% in 2000
US average: 88.5%
from 3.5% in 2000
US average: 12.7%
Section 06
Commute & transportation from 13.0 min in 2000
US average: 26.9
from 85.5% in 2009
US average: 75.1%
from 0.9% in 2009
US average: 8.4%
Section 07
Work & employment from 2.6% in 2011
US average: 5.4%
from 69.7% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 26.7% in 2009
US average: 39.3%
Section 08
People & community from 0.3% in 2009
US average: 13.5%
from 5.5% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 5.5% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 28%(21)
Gulf War (1990s) 17.3%(13)
Share of the 75 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Janesville Head to head
Compare Janesville to nearby cities JANESVILLE VS
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Frequently asked
How many people live in Janesville, Iowa? Janesville, Iowa has about 1,034 residents according to the 2020 American Community Survey.
What is the median household income in Janesville, Iowa? The typical household in Janesville, Iowa earns about $72,500 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 $170,800, and the typical rent is about $536 a month.
How educated are people in Janesville, Iowa? About 20.7% 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 3.0% 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 213 residents, a change of about 26 percent over that period.
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