Sun Prairie Population

1870–2026

39,999

2026 projection

11.1% since 2020 (increase)

010K20K30K40K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Sun Prairie. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202639,999+7721.97%
202539,227+1260.32%
202439,101+7692.01%
202338,332+8402.24%
202237,492+8312.27%
202136,661+6481.80%
202036,013+1,2903.72%
201934,723+7452.19%
201833,978+9862.99%
201732,992+1740.53%

Showing 10 of 31 years.

Sun Prairie Demographics

36.7median age

Median age

Female39 yrs
Male33.5 yrs

Adults

27,991
5,317 seniors · 19%22,674 other adults

Sex

Female 51.4% · 19,323Male 48.6% · 18,247

Population by age

MaleFemale85+ years, male: 14185+ years, female: 78080–84 years, male: 29480–84 years, female: 49475–79 years, male: 20375–79 years, female: 61970–74 years, male: 59770–74 years, female: 83165–69 years, male: 53865–69 years, female: 82060–64 years, male: 86460–64 years, female: 1,12555–59 years, male: 1,16955–59 years, female: 1,03450–54 years, male: 94250–54 years, female: 1,04845–49 years, male: 99645–49 years, female: 1,34040–44 years, male: 1,30340–44 years, female: 1,36335–39 years, male: 1,67735–39 years, female: 1,71130–34 years, male: 1,29230–34 years, female: 1,36425–29 years, male: 1,33225–29 years, female: 1,45620–24 years, male: 79620–24 years, female: 1,30615–19 years, male: 1,50715–19 years, female: 74110–14 years, male: 1,78710–14 years, female: 1,1635–9 years, male: 1,5715–9 years, female: 1,2120–4 years, male: 1,2380–4 years, female: 91685+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 376 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Sun Prairie Income

$90,942median household income

Median household income

$90,942

Half of households earn more, half earn less

Median earnings

$63,578

Typical yearly pay for a worker 25 or older.

Poverty rate

6.2%

About 1 in 16 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Sun Prairie Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%55%47%
Never married32%35%29%
Divorced12%8%15%
Widowed5%1%8%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year