Rock County, Wisconsin Population 2018

Rock County, Wisconsin's estimated population is 162,309 with a growth rate of 0.55% in the past year according to the most recent United States census data. Rock County, Wisconsin is the 9th largest county in Wisconsin.

Year Population Growth Growth Rate
2017161,226-1,083-0.67%
2017162,3098880.55%
2016161,4213620.22%
2015161,059890.06%
2014160,9705970.37%
2013160,3732810.18%
2012160,0922100.13%
2011159,882-381-0.24%
2010160,26320,75314.88%
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%
18401,7010.00%

Rock County, Wisconsin Population Growth

Population Data via

Population by Race

Race Population
White143,279
Black or African American7,120
Two or More Races5,227
Some Other Race3,454
Asian1,899
American Indian and Alaska Native221
Native Hawaiian and Other Pacific Islander26

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Rock County, Wisconsin Population Pyramid 2018

1,0002,0003,0004,0005,0006,000 Male Population1,0002,0003,0004,0005,0006,000 Female Population80757065605550454035302520151050

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Rock County, Wisconsin Median Age

39.3


Total

38.1


Male

40.9


Female

Rock County, Wisconsin Adults

There are 122,950 adults, (24,728 of whom are seniors) in Rock County, Wisconsin.

Rock County, Wisconsin Age Dependency

64.1

Age Dependency Ratio

25.2

Old Age Dependency Ratio

39

Child Dependency Ratio

Rock County, Wisconsin Sex Ratio

Female

81,933

50.82%

Male

79,293

49.18%

Rock County, Wisconsin Households and Families

Rock County, Wisconsin Renter vs Owner Occupied by Household Type

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Rock County, Wisconsin Household Types

Type Owner Renter
Married86.1%13.9%
All68.7%31.3%
Male63.2%36.8%
Non Family54.3%45.7%
Female45.7%54.3%

68.7%

Rate of Home Ownership

Rock County, Wisconsin Households by Type

Type Count Average Size Owned
All64,4822.4568.7
Married30,4243.0486.1
Non Family22,1791.2254.3
Female8,4363.2245.7
Male3,4433.2863.2

2.97

Average Family Size

2.45

Average Household Size

8.3%

Unmarried (Opposite Sex)

0.5%

Unmarried (Same Sex)

Rock County, Wisconsin Households

Rock County, Wisconsin Education

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

Education Attained Count Percentage
Less Than 9th Grade3,2412.98%
9th to 12th Grade7,4626.86%
High School Graduate40,12736.88%
Some College23,02021.16%
Associates Degree11,63210.69%
Bachelors Degree15,41014.16%
Graduate Degree7,9007.26%

Rock County, Wisconsin Educational Attainment by Race

Name Total High School Bachelors
White95,93188,51921,806
Hispanic6,2204,060422
Black4,2803,409466
Other Race1,7371,05156
Multiple Races1,3201,089208
Asian1,1611,064459
Native American13612922
Islander2626

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 39.53%.

Rock County, Wisconsin Earnings by Educational Attainment

Name Average Male Female
Overall$35,426$43,122$29,255
Less Than High School$25,123$29,930$19,184
High School Grad$30,041$37,220$22,835
Some College$34,896$43,747$28,393
Bachelors Degree$47,756$60,847$37,393
Graduate Degree$61,813$66,128$59,670

$35,426

Average Earnings

$43,122

Average Male

$29,255

Average Female

Rock County, Wisconsin Language

Rock County, Wisconsin Language by Age

Rock County, Wisconsin Language

91.94% of Rock County, Wisconsin residents speak only English, while 8.06% speak other languages. The largest non-English language is Spanish, which is spoken by 6.10% of the population.

Rock County, Wisconsin Poverty

Rock County, Wisconsin Poverty by Race

Name Total In Poverty Poverty Rate
White131,59213,99810.64%
Hispanic13,3634,39532.89%
Black6,8972,66638.65%
Multiple5,1091,67032.69%
Other3,42492727.07%
Asian1,75728916.45%
Native2218036.20%

14.29%

Overall Poverty Rate

12.77%

Male Poverty Rate

15.76%

Female Poverty Rate

Poverty in Rock County, Wisconsin

The race most likely to be in poverty in Rock County, Wisconsin is Black, with 38.65% below the poverty level.

The race least likely to be in poverty in Rock County, Wisconsin is White, with 10.64% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.96%. Among those working part-time, it was 16.96%, and for those that did not work, the poverty rate was 19.80%.

Rock County, Wisconsin Poverty Rate by Education

Name Poverty
Less Than High School24.44%
High School13.04%
Some College8.51%
Bachelors or Greater3.77%

Rock County, Wisconsin Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed39.68%
Male Unemployed26.82%
Female Employed8.18%
Male Employed5.77%

Rock County, Wisconsin Income

Rock County, Wisconsin Income by Household Type

Name Median Mean
Households$53,410$66,222
Families$64,322$75,805
Married Families$76,923$89,262
Non Families$32,160$43,359

Rock County, Wisconsin Marital Status

Rock County, Wisconsin Marital Status

Marriage Rates

49.3%

Overall Marriage Rate

51.1%

Male Marriage Rate

47.5%

Female Marriage Rate

Rock County, Wisconsin Married by Age and Sex

Rock County, Wisconsin Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 55To64.

Rock County, Wisconsin Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Rock County, Wisconsin Veterans

Rock County, Wisconsin Veterans by War

10,704

Number of Veterans

10,030

Male Veterans

674

Female Veterans

Name Veterans
Vietnam3,898
First Gulf War1,508
Second Gulf War1,200
Korea848
World War II541

Rock County, Wisconsin Veterans by Age

Name Veterans
65 to 742,864
75+2,619
35 to 542,346
55 to 642,146
18 to 34729

Rock County, Wisconsin Veterans by Race

Name Veterans % of Total
White10,1459.06%
Black3727.19%
2 or More1397.12%
Hispanic1361.73%
Asian362.47%
Indian128.39%

Rock County, Wisconsin Veterans by Education

6.01%

Veteran Poverty Rate

26.71%

Veteran Disability Rate

Rock County, Wisconsin Employment Status

Rock County, Wisconsin Employment by Age

65.6%

Labor Force Participation

61.4%

Employment Rate

6.4%

Unemployment Rate

Rock County, Wisconsin Employment by Race

Rock County, Wisconsin Employment by Education

Population of Cities in Rock County, Wisconsin

City 2010 Census 2016 Estimated Growth Growth Rate
Janesville63621641595380.85%
Beloit3700536757-248-0.67%
Milton55555580250.45%
Edgerton 541855521342.47%
Evansville503152652344.65%
Brodhead 32933276-17-0.52%
Clinton21532126-27-1.25%
Orfordville14421490483.33%
Footville808803-5-0.62%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990