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CITY · 2000 CENSUS

Sun Prairie

Wisconsin · 20,369 residents · 13.1 sq mi
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The short version

With 20,369 people, Sun Prairie is a city in Wisconsin. Growth has run 33% since 1990, or 5,036 more people. 34% of adults hold a bachelor's degree or higher. Poverty is uncommon here, at 4.4% of people here. Households here earn about 17% more than in Wisconsin as a whole. Owners hold 61% of the housing stock.

At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 32.9
US median: 35.2
More educated
34% hold a bachelor's degree
US average: 24%
Less affordable
home values up 46%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

20,369
+33%since 1990
from 15,333 in 1990
1990 – 2025
32.9
+6%since 1990
from 31.0 in 1990
US average: 35.2
Land area
13.1 sq mi
Population, 19902024
13K20K26K33K40K19902000201020202024Sun Prairie
202438K
1990201020202024
Age distribution, 2000
Under 58.2%(1,666)
US avg: 6.8%
5 to 97.8%(1,594)
US avg: 7.3%
10 to 147.8%(1,590)
US avg: 7.3%
15 to 197.2%(1,468)
US avg: 7.2%
20 to 246.1%(1,251)
US avg: 6.7%
25 to 3416.4%(3,347)
US avg: 14.2%
35 to 4417.3%(3,521)
US avg: 16%
45 to 5413.1%(2,660)
US avg: 13.4%
55 to 646.7%(1,374)
US avg: 8.6%
65 to 744.5%(925)
US avg: 6.5%
75 to 843.4%(701)
US avg: 4.4%
85 and over1.3%(272)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

$51,345
+10%inflation adjusted, since 1990
from $35,301 in 1990
US average: $42,589
1990 – 2024
$23,277
+63%since 1990
from $14,268 in 1990
US average: $21,522
4.4%
+1.3 ptssince 1990
from 3.1% in 1990
US average: 12.4%
Section 03

Housing

$142,300
+46%inflation adjusted, since 1990
from $74,200 in 1990
US average: $120,530
1990 – 2024
$654
+7%inflation adjusted, since 1990
from $465 in 1990
US average: $602
60.8%
+4.5 ptssince 1990
from 56.3% in 1990
39.2% rent
Section 04

Race & ethnicity

1990
White, non-Hispanic97.8%(14,990)
Black0.7%(100)
Hispanic / Latino0.7%(101)
Asian0.5%(80)
2000
White, non-Hispanic91.2%(18,571)
Black3.1%(623)
Hispanic / Latino2.7%(555)
Asian1.3%(273)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican3.3%(1,255)
Colombian0.1%(46)
Spaniard0.1%(21)
Cuban0%(13)
Asian origin
Asian Indian4.5%(1,681)
Hmong2.1%(781)
Chinese0.8%(308)
Filipino0.3%(117)
Korean0.3%(111)
Vietnamese0.2%(86)
Nepalese0.2%(79)
Okinawan0.1%(20)
Pacific Islander origin
Chamorro0.1%(50)
Samoan0%(7)
Ancestry
German30.5%(11,458)
Irish11.8%(4,415)
English8.5%(3,187)
Norwegian6.3%(2,365)
Polish4.9%(1,834)
American4%(1,498)
Italian2.8%(1,034)
Scottish2.5%(947)
French2%(738)
Dutch1.2%(461)
Swedish1.2%(459)
+ 29 more ancestry groups with data
Czech0.8%(317)
Welsh0.8%(316)
Russian0.7%(256)
Kenyan0.7%(252)
Swiss0.5%(202)
Danish0.4%(162)
Hungarian0.4%(147)
Lithuanian0.4%(145)
Arab0.3%(123)
Brazilian0.3%(107)
Ukrainian0.3%(103)
Egyptian0.2%(85)
Austrian0.2%(66)
Romanian0.2%(66)
Belgian0.2%(64)
West Indian0.2%(57)
Jamaican0.2%(57)
Slovak0.1%(53)
Portuguese0.1%(51)
Finnish0.1%(49)
Scotch-Irish0.1%(40)
Greek0.1%(38)
Lebanese0.1%(27)
British0.1%(20)
Croatian0.1%(19)
Slovene0%(18)
Armenian0%(13)
Iranian0%(13)
Section 05

Education

34.4%
+13.5 ptssince 1990
from 20.9% in 1990
US average: 24.4%
High school or higher
90.9%
+7.0 ptssince 1990
from 83.9% in 1990
US average: 80.3%
7.5%
+2.1 ptssince 1990
from 5.4% in 1990
US average: 8.8%
Section 06

Commute & transportation

13.5 min
−28%since 1990
from 18.8 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.

Marital status
Men 15+
Never married28.7%(2,099)
Married61.9%(4,531)
Widowed1.4%(101)
Divorced8%(588)
Women 15+
Never married23.7%(1,900)
Married58%(4,647)
Widowed8%(640)
Divorced10.3%(829)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

1.6%
−2.8 ptssince 2013
from 4.4% in 2013
US average: 8.4%
72.7%
−0.4 ptssince 2020
from 73.1% in 2020
US average: 54.8%
Direct-purchase
14.1%
+1.7 ptssince 2020
from 12.4% in 2020
US average: 13.8%
15.2%
+0.7 ptssince 2020
from 14.5% in 2020
US average: 18.4%
11.0%
−1.1 ptssince 2020
from 12.1% in 2020
US average: 20.9%
VA health care
2.0%
−0.6 ptssince 2020
from 2.6% in 2020
US average: 2.2%
Any private
84.7%
+1.1 ptssince 2020
from 83.6% in 2020
US average: 67.1%
Any public
25.2%
−0.1 ptssince 2020
from 25.3% in 2020
US average: 36.7%

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, 2024
Gulf War (2001 or later)33.6%(575)
US avg: 26.4%
Gulf War (1990s)8.7%(149)
US avg: 24.3%
Vietnam era36.4%(622)
US avg: 33.1%
Korean War4.1%(70)
US avg: 4.5%
World War II0%(0)
US avg: 1%

Share of the 1,711 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.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
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Frequently asked

How many people live in Sun Prairie, Wisconsin?

Sun Prairie, Wisconsin has about 20,369 residents according to the 2000 Census.

What is the median household income in Sun Prairie, Wisconsin?

The typical household in Sun Prairie, Wisconsin earns about $51,345 a year. Half of households make more than that, and half make less.

Is Sun Prairie, Wisconsin expensive?

In Sun Prairie, Wisconsin, the median home is worth about $142,300, and the typical rent is about $654 a month.

How educated are people in Sun Prairie, Wisconsin?

About 34.4% of adults age 25 and over in Sun Prairie, Wisconsin hold a bachelor's degree or higher.

What is the poverty rate in Sun Prairie, Wisconsin?

About 4.4% of people in Sun Prairie, Wisconsin live below the federal poverty line.

Has Sun Prairie, Wisconsin grown since 1990?

Yes, Sun Prairie, Wisconsin has grown since 1990. The population has added about 5,036 residents, a change of about 33 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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