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COUNTY · 2000 CENSUS

Rock County

Wisconsin · 152,307 residents · 718.167 sq mi
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The short version

Rock County has roughly average household income, with a median household income of $45,517. Population has held roughly steady since 1990. Median home value has more than doubled since 1990, reaching $98,300.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 35.9
US median: 35.2
Less educated
17% hold a bachelor's degree
US average: 24%
Less affordable
home values up 42%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
152,307
+9%since 1990
from 139,510 in 1990
1990 – 2025
Population density
212 / sq mi
+9%since 1990
from 194 / sq mi in 1990
US average: 242
Median age
35.9
+9%since 1990
from 33.0 in 1990
US average: 35.2
Population, 1990 – 2024
137K144K152K159K167K1990201020202024Rock County
2024164K
1990201020202024
Section 02

Income & economy

Median household income
$45,517
+13%inflation adjusted, since 1990
from $30,632 in 1990
US average: $42,589
1990 – 2024
Per capita income
$20,895
+56%since 1990
from $13,428 in 1990
US average: $21,522
Poverty rate
7.3%
−2.6 ptssince 1990
from 9.9% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$98,300
+42%inflation adjusted, since 1990
from $52,500 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$543
+6%inflation adjusted, since 1990
from $387 in 1990
US average: $602
Owner-occupied
71.1%
+3.0 ptssince 1990
from 68.2% in 1990
28.9% rent
Afford Score
2.2
+26%since 1990
from 1.7 in 1990
1990 – 2024
RELATED:See current rent listings in Rock County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic93.8%(130,827)
Black4.7%(6,537)
Hispanic / Latino1.2%(1,704)
Asian0.6%(906)
Diversity Score17.4%(24,291)
2000
White, non-Hispanic89.2%(135,884)
Black4.6%(6,943)
Hispanic / Latino3.9%(5,953)
Asian0.8%(1,180)
Diversity Score21.9%(33,343)
Diversity Score
22
+26%since 1990
from 17 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
16.7%
+3.4 ptssince 1990
from 13.3% in 1990
US average: 24.4%
High school or higher
83.9%
+5.7 ptssince 1990
from 78.2% in 1990
US average: 80.3%
Graduate degree
5.4%
+1.0 ptssince 1990
from 4.4% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
13.6 min
−26%since 1990
from 18.3 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Rock County

Madera County
Pop 167,927
Johnson County
Pop 160,044
Mesa County
Pop 162,845
Sumter County
Pop 157,772
Places similar to Rock County
Head to head

Compare Rock County to nearby counties

ROCK COUNTY VS
Winnebago County
Income$65,837+45%
Home value$164,500+67%
Population283,674+70%
SEE FULL COMPARISON →
ROCK COUNTY VS
Green County
Income$82,852+82%
Home value$250,200+155%
Population37,227−78%
SEE FULL COMPARISON →
ROCK COUNTY VS
Walworth County
Income$80,520+77%
Home value$302,700+208%
Population106,127−36%
SEE FULL COMPARISON →
ROCK COUNTY VS
Boone County
Income$84,571+86%
Home value$216,900+121%
Population53,568−68%
SEE FULL COMPARISON →
Frequently asked

How many people live in Rock County, Wisconsin?

Rock County, Wisconsin has about 152,307 residents according to the 2000 Census.

What is the median household income in Rock County, Wisconsin?

The typical household in Rock County, Wisconsin earns about $45,517 a year. Half of households make more than that, and half make less.

Is Rock County, Wisconsin expensive?

In Rock County, Wisconsin, the median home is worth about $98,300, and the typical rent is about $543 a month.

How educated are people in Rock County, Wisconsin?

About 16.7% of adults age 25 and over in Rock County, Wisconsin hold a bachelor's degree or higher.

What is the poverty rate in Rock County, Wisconsin?

About 7.3% of people in Rock County, Wisconsin live below the federal poverty line.

Has Rock County, Wisconsin grown since 1990?

Yes, Rock County, Wisconsin has grown since 1990. The population has added about 12,797 residents, a change of about 9 percent over that period.

Keep going

Explore from here

41 census tracts (top 20 by population)
Census Tract 12.01Census Tract 13.02Census Tract 12.02Census Tract 14Census Tract 30.02Census Tract 16Census Tract 30.01Census Tract 29.02Census Tract 13.06Census Tract 31.02Census Tract 26.01Census Tract 17Census Tract 11Census Tract 28Census Tract 13.03Census Tract 5Census Tract 26.02Census Tract 18Census Tract 8Census Tract 7
13 ZIP codes
ZIP 53511ZIP 53546ZIP 53545ZIP 53548ZIP 53534ZIP 53563ZIP 53536ZIP 53520ZIP 53525ZIP 53576ZIP 53537ZIP 53505ZIP 53501
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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