Janesville, Wisconsin Population 2024

66,155

Janesville is a city located in Rock County Wisconsin. Janesville has a 2024 population of 66,155. It is also the county seat of Rock County. Janesville is currently growing at a rate of 0.18% annually and its population has increased by 0.74% since the most recent census, which recorded a population of 65,667 in 2020.

The average household income in Janesville is $80,441 with a poverty rate of 9.87%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Janesville is 39.5 years, 37.5 years for males, and 41.4 years for females.

Janesville Demographics

According to the most recent ACS, the racial composition of Janesville was:

  • White: 87.9%
  • Two or more races: 4.71%
  • Black or African American: 3.33%
  • Other race: 2.2%
  • Asian: 1.73%
  • Native American: 0.12%
  • Native Hawaiian or Pacific Islander: 0%
Land Area (mi²)
34.1 sq mi
Density (mi²)
1,942.90/sq mi
Growth Since 2020
0.74% (488)
The current population of Janesville, Wisconsin is 66,155 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 65,667.

Janesville, Wisconsin Population 2024

Population by Race

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Race
Population
Percentage (of total)
White57,72487.9%
Two or more races3,0944.71%
Black or African American2,1903.33%
Other race1,4452.2%
Asian1,1371.73%
Native American790.12%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Janesville Population by Race

Janesville Population Pyramid 2024

Janesville Median Age

39.5

Total

37.5

Male

41.4

Female

Janesville Adults

There are 51,128 adults, (11,117 of whom are seniors) in Janesville.

Janesville Age Dependency

64.1

Age Dependency Ratio

27.8

Old Age Dependency Ratio

36.3

Child Dependency Ratio

Janesville Sex Ratio

Female33,17050.51%
Male32,49949.49%

Janesville Population by Age

Janesville Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All27,8952.3266.433.6
Married11,9703.0586.113.9
Non Family11,1761.2451.848.2
Female3,2043.0746.353.7
Male1,5452.9961.638.4

2.93

Average Family Size

2.32

Average Household Size

66.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Janesville Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Janesville Educational Attainment by Sex (over 25)

Janesville Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 95.22%.

The highest rate of bachelors degrees is among native american people with a rate of 68.12%.

Janesville Educational Attainment by Race

All

Male

Female

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$45,752

Average Earnings

$51,711

Average Male

$39,541

Average Female

Janesville Earnings by Educational Attainment

Janesville Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Janesville Language

93.45% of Janesville residents speak only English, while 6.55% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.94% of the population.

Janesville Language

Janesville Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White55,7945,2449.4%
Black2,10659728.35%
Hispanic3,5582978.35%
Multiple3,0082769.18%
Asian1,131867.6%
Other1,441553.82%
Native791620.25%

9.87%

Overall Poverty Rate

8.81%

Male Poverty Rate

10.91%

Female Poverty Rate

Poverty in Janesville

The race most likely to be in poverty in Janesville is Black, with 28.35% below the poverty level.

The race least likely to be in poverty in Janesville is Other, with 3.82% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.26%. Among those working part-time, it was 12.95%, and for those that did not work, the poverty rate was 16.76%.

Janesville Poverty

rate

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Rate
Poverty
Less Than 9th Grade23.8%
High School10%
Some College7.89%
Bachelors or Greater3.54%

Janesville Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed22.63%
Male Unemployed20.63%
Female Employed5.98%
Male Employed3.32%

Janesville Poverty Rate by Employment Status and Sex

Janesville Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Janesville Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

46.7%

Overall Marriage Rate

48.2%

Male Marriage Rate

45.2%

Female Marriage Rate

Janesville Married by Age and Sex

male

female

Janesville Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Janesville Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Janesville Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

3,602

Number of Veterans

3,408

Male Veterans

194

Female Veterans

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Janesville Veterans by War

count

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Janesville Veterans by Age

count

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Janesville Veterans by Race

Janesville Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.57%

Veteran Poverty Rate

32.86%

Veteran Disability Rate

Janesville Veterans by Education

LaborForceParticipation

65.5%

Labor Force Participation

62.8%

Employment Rate

4.1%

Unemployment Rate

Janesville Employment by Age

LaborForceParticipation

Janesville Employment by Race

LaborForceParticipation

Janesville Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

71.63%

Born in Janesville

96.51%

Native Born

3.49%

Foreign Born

1.82%

Non Citizen

1.67%

Naturalized

Place of Birth

96.51% of Janesville residents were born in the United States, with 71.63% having been born in Wisconsin. 1.82% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Janesville Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202966,7651220.18%
202866,6431220.18%
202766,5211220.18%
202666,3991220.18%
202566,2771220.18%
202466,1551220.18%
202366,0331220.19%
202265,911600.09%
202165,8511840.28%
202065,6671,1701.81%
201964,497190.03%
201864,4781380.21%
201764,3402850.44%
201664,0551280.2%
201563,927290.05%
201463,8981880.3%
201363,7101730.27%
201263,537730.12%
201163,464-168-0.26%
201063,63200%
200059,4987,36514.13%
199052,1331,0622.08%
198051,0714,64510.01%
197046,42611,26232.03%
196035,16410,26541.23%
195024,8991,9078.29%
194022,9921,3646.31%
193021,6283,33518.23%
192018,2934,39931.66%
191013,8947095.38%
190013,1852,34921.68%
189010,8361,81820.16%
18809,0182292.61%
18708,7891,08614.1%
18607,703-59,062-88.46%
showing: 35 rows

Janesville Population by Year