Rock County, Wisconsin Population 2024

163,796

Rock County, Wisconsin's estimated 2024 population is 163,796 with a growth rate of -0.08% in the past year according to the most recent United States census data. Rock County, Wisconsin is the 9th largest county in Wisconsin. The 2010 population was 160,261 and has seen a growth of 2.21% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029163,136-132-0.08%
2028163,268-132-0.08%
2027163,400-132-0.08%
2026163,532-132-0.08%
2025163,664-132-0.08%
2024163,796-132-0.08%
2023163,928-132-0.08%
2022164,060-132-0.08%
2021164,1924410.27%
2020163,7516310.39%
2019163,1203030.19%
2018162,8175390.33%
2017162,2789150.57%
2016161,3632680.17%
2015161,095960.06%
2014160,9995970.37%
2013160,4022890.18%
2012160,1132140.13%
2011159,899-362-0.23%
2010160,261
1990139,510900.06%
1980139,4207,4505.65%
1970131,97018,05715.85%
1960113,91321,13522.78%
195092,77812,60515.72%
194080,1735,9678.04%
193074,2068,05612.18%
192066,15010,61219.11%
191055,5384,3358.47%
190051,2037,98318.47%
189043,2204,39711.33%
188038,823-207-0.53%
187039,0302,3406.38%
186036,69015,94076.82%
185020,75019,0491119.87%
18401,701-161,435-98.96%
showing: 36 rows
2024 Growth Rate
-0.08% (-132)
County Website
Rock County
County Seat
2010 Population
160,261
Area
718 mi²
Density
228 people/mi²
Growth Since 2010
2.21% (3,535)
Founded
1839

Rock County, Wisconsin Population 2024

Population by Race

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Race
Population
Percentage (of total)
White136,72083.46%
Two or more races11,4386.98%
Black or African American7,5954.64%
Other race5,8353.56%
Asian1,8811.15%
Native American3380.21%
Native Hawaiian or Pacific Islander100.01%
showing: 7 rows

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Rock County, Wisconsin Population by Race

Rock County, Wisconsin Population Pyramid 2024

Rock County, Wisconsin Median Age

40

Total

38.8

Male

41.2

Female

Rock County, Wisconsin Adults

There are 126,659 adults, (27,796 of whom are seniors) in Rock County, Wisconsin.

Rock County, Wisconsin Age Dependency

65.7

Age Dependency Ratio

28.1

Old Age Dependency Ratio

37.6

Child Dependency Ratio

Rock County, Wisconsin Sex Ratio

Female82,27550.22%
Male81,54249.78%

Rock County, Wisconsin Population by Age

Rock County, Wisconsin Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All66,4392.4269.930.1
Married31,2433.0887.212.8
Non Family24,7631.2655.644.4
Female6,9843.2548.251.8
Male3,4493.1560.139.9
showing: 5 rows

3.01

Average Family Size

2.42

Average Household Size

69.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Rock County, Wisconsin 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

Rock County, Wisconsin Educational Attainment by Sex (over 25)

Rock County, Wisconsin Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 44.37%.

Rock County, Wisconsin Educational Attainment by Race

All

Male

Female

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$46,151

Average Earnings

$53,057

Average Male

$38,856

Average Female

Rock County, Wisconsin Earnings by Educational Attainment

Rock County, Wisconsin Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Rock County, Wisconsin Language

91.25% of Rock County, Wisconsin residents speak only English, while 8.75% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.94% of the population.

Rock County, Wisconsin Language

Rock County, Wisconsin Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White130,28410,8248.31%
Hispanic15,3612,57116.74%
Black7,4151,54320.81%
Multiple11,2341,17810.49%
Other5,81773812.69%
Asian1,73021312.31%
Native3384613.61%
showing: 7 rows

9.87%

Overall Poverty Rate

8.78%

Male Poverty Rate

10.94%

Female Poverty Rate

Poverty in Rock County, Wisconsin

The race most likely to be in poverty in Rock County, Wisconsin is Black, with 20.81% below the poverty level.

The race least likely to be in poverty in Rock County, Wisconsin is White, with 8.31% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.8%. Among those working part-time, it was 11.9%, and for those that did not work, the poverty rate was 17.18%.

Rock County, Wisconsin Poverty

rate

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Rate
Poverty
Less Than 9th Grade20.65%
High School10.17%
Some College7.18%
Bachelors or Greater2.81%
showing: 4 rows

Rock County, Wisconsin Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed28.53%
Female Unemployed25.55%
Female Employed5.72%
Male Employed3.19%
showing: 4 rows

Rock County, Wisconsin Poverty Rate by Employment Status and Sex

Rock County, Wisconsin Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Rock County, Wisconsin Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

49.0%

Overall Marriage Rate

50.4%

Male Marriage Rate

47.6%

Female Marriage Rate

Rock County, Wisconsin Married by Age and Sex

male

female

Rock County, Wisconsin 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.

Rock County, Wisconsin Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Rock County, Wisconsin Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

9,376

Number of Veterans

8,819

Male Veterans

557

Female Veterans

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Rock County, Wisconsin Veterans by War

count

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Rock County, Wisconsin Veterans by Age

count

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Rock County, Wisconsin Veterans by Race

Rock County, Wisconsin Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.99%

Veteran Poverty Rate

30.49%

Veteran Disability Rate

Rock County, Wisconsin Veterans by Education

LaborForceParticipation

65.4%

Labor Force Participation

62.8%

Employment Rate

3.9%

Unemployment Rate

Rock County, Wisconsin Employment by Age

LaborForceParticipation

Rock County, Wisconsin Employment by Race

LaborForceParticipation

Rock County, Wisconsin 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

70.17%

Born in Rock County, Wisconsin

95.07%

Native Born

4.93%

Foreign Born

2.85%

Non Citizen

2.08%

Naturalized

Place of Birth

95.07% of Rock County, Wisconsin residents were born in the United States, with 70.17% having been born in Wisconsin. 2.85% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Rock County, Wisconsin Place of Birth

Sources