St. Croix County is a county of 96,033 people in Wisconsin. The population has risen by half since 2000, adding 32,878 people. That puts it in the top 1% of US counties for household income. 78% of homes are owner-occupied. That is roughly 33% ahead of the Wisconsin median. The foreign-born share is 2%.
At a glance
Wealthier
median household income $103,046, above the US median
US median: $82,259
Mid-age
median age 40.4
US median: 38.9
More educated
39% hold a bachelor's degree
US average: 36%
Less affordable
home values up 46%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about St. Croix County
What changed most since 1990
Population50,251 → 96,033(+91%)US over the same years: +35%
White share99.0% → 91.4%(−7.5 pts)US over the same years: −17.8 pts
Median home value (2024 dollars)$179,045 → $377,700(+111%)US over the same years: +67%
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)26.2%(1,322)
US avg: 26.4%
Gulf War (1990s)21.6%(1,089)
US avg: 24.3%
Vietnam era34.8%(1,758)
US avg: 33.1%
Korean War1.6%(82)
US avg: 4.5%
World War II0.3%(15)
US avg: 1%
Share of the 5,047 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
Over time
St. Croix County, decade by decade
St. Croix County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
50,251
$88,121
$179,045
20.3%
2.6
2000
63,155
$100,064
$258,311
26.3%
6.3
2010
84,345
$97,026
$324,685
32.5%
12.7
2020
93,536
$103,005
$320,099
36.8%
20.5
2024
96,033
$103,046
$377,700
39.5%
20.2
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.