Population
39,227
Sun PrairieCensus, July 2025
From 36,013 in July 2020 to 39,227 in July 2025.
The Census Bureau's estimate of everyone living here on July 1.
Sun Prairie by the numbers
Official figures for Sun Prairie. Each one shows its date, its source and the area it covers. A figure for a larger area says so.
People
Change in a year
+0.3%
Sun PrairieCensus, 2024 to 2025
Change in the population estimate over one year, from July 1 to July 1, both from the same release.
Change over 5 years
+8.9%
Sun PrairieCensus, 2020 to 2025
Change in the population estimate over five years, from July 1 to July 1, both from the same release.
Sources
- U.S. Census Bureau, Population Estimates, Vintage 2025 · Public domain
Figures are shown as each source publishes them. Survey figures carry a 90% margin of error. A figure for a larger area is labelled with that area.