St. Croix County, Wisconsin Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
St. Croix County, WI Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above averageHealthier than 93% of counties in Wisconsin
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A
Income Above averageAmong the top 3 wealthiest counties in Wisconsin
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B
Education Around averageAmong the top 5 best educated counties in Wisconsin
Source: Map AI Methodology
Population: density and quick facts
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| Population | 96,041 | 5,910,864 | 337,468,954 |
| Population density (per sq mi) | 130.7 | 90.2 | 86.4 |
| Population growth (%/yr) | 1.29% | 0.34% | 0.59% |
| Median age | 40.7 | 40.4 | 37.3 |
| Households | 37,514 | 2,477,189 | 130,235,071 |
Population in St. Croix County grew by 19.3% from 2009 to 2024, reaching 96,041 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in St. Croix County is Gen X, aged 45–60, at 22.6% of residents. That is 1.8 points above Wisconsin as a whole.
- Gen Z 13–28 19,316 20.1% -1.2 pts
- Millennials 29–44 21,371 22.3% +1.5 pts
- Gen X 45–60 21,680 22.6% +1.8 pts
- Boomers 61–79 14,275 14.9% -3.0 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Wisconsin, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 49.2% of the people living in St. Croix County and men 50.8%.
- Women 49.2% Wisconsin 50.0%
- Men 50.8% Wisconsin 50.0%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in St. Croix County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
St. Croix County has a the economy index of A, which means it is very prosperous.
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| Median household income | $103,525 | $77,698 | $80,455 |
| Income growth (%/yr) | 4.32% | 4.41% | 4.80% |
| Unemployment rate | 2.6% | 3.2% | 5.2% |
The median household income in St. Croix County is about 33% higher than in Wisconsin.
Housing
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| Median home price | $234,911 | $170,479 | $248,835 |
| Median rent | $1,271 | $1,087 | $1,407 |
| Homeownership rate | 78.3% | 67.8% | 65.2% |
The median home price in St. Croix County is about 15.4 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,271 per month for that long.
Commute Time & Mobility
Commuters in St. Croix County spend about 51 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 211 hours, about 8.8 full days, spent commuting.
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 25.3 | 18.8 | 22.4 |
| Round-trip commute (min) | 50.6 | 37.5 | 44.8 |
| Yearly time spent (hours) | 211 | 156 | 187 |
| Estimated yearly cost | $6,534 | $4,846 | $5,790 |
| Work from home | 16.5% | 13.1% | 15.0% |
| Highway traffic (vehicles/day) | 6,621 | 6,703 | 8,813 |
| Local road traffic (vehicles/day) | 787 | 811 | 1,355 |
Fastest commutes among counties in
Wisconsin:
Ashland County (12.8 min), Door County (13.6 min), Eau Claire County (15.3 min).
Slowest:
Oconto County (26.4 min), St. Croix County (25.3 min), Waushara County (23.9 min).
The average commute time in St. Croix County is 25 minutes, longer than the 19 minutes in Wisconsin.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
St. Croix County has a education index of B, which means it is quite educated.
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 35.3% | 29.7% | 31.6% |
| Average household size | 2.53 | 2.33 | 2.53 |
Highest education index among counties in
Wisconsin:
Dane County (0.4), Ozaukee County (0.4), Waukesha County (0.4).
Lowest:
Clark County (0.2), Adams County (0.2), Juneau County (0.2).
Health
St. Croix County has a health index of A, which means it is very healthy.
| Metric | St. Croix County | Wisconsin Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.7 | 79.6 | 78.3 |
| Self-rated poor health | 8.9% | 13.2% | 16.3% |
| Smokers | 15.2% | 18.5% | 19.0% |
Highest health index among counties in
Wisconsin:
Dane County (0.8), Waukesha County (0.8), Ozaukee County (0.8).
Lowest:
Menominee County (0.8), Clark County (0.8), Forest County (0.8).
St. Croix County, WI Compared With Nearby Counties
St. Croix County, WI is the 2nd largest of the 5 counties compared here, 96,041 residents against a local median of 45,541. Where St. Croix County, WI breaks from the counties next to it is median home price, sitting 28% above the local median of $183,813 at $234,911.
Median household income tells the same story from another angle: $103,525 against a local median of $85,306, 21% above it. The one measure here that carries a verdict is median household income, and at 21% above the local median it puts St. Croix County, WI at the better end of the local range. The counties themselves spread $234,954 on median home price, so St. Croix County, WI sits at one end of an already wide local range rather than apart from it. St. Croix County, WI has the 2nd highest median home price of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| St. Croix County, WI | 96,041 | $103,525 #2/5 | $234,911 #2/5 | 25.3 min #5/5 |
| Pierce County, WI | 42,584 | $93,522 | $158,333 | 23.7 min |
| Polk County, WI | 45,555 | $77,091 | $329,308 | 23.1 min |
| Washington County, MN | 276,224 | $115,522 | $209,293 | 22.6 min |
| Dunn County, WI | 45,527 | $74,793 | $94,354 | 18.4 min |
Frequently Asked Questions
Common questions about St. Croix County, Wisconsin.
How many people live in St. Croix County, Wisconsin?
About 96,041 people live in St. Croix County, Wisconsin, in 37,514 households of 2.5 people on average. The median age is 40.7, so residents are older than the U.S. median of 37.3 by about 3 years.
Is St. Croix County, Wisconsin urban or rural?
Averaged over its land area, St. Croix County, Wisconsin has 131 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 1.5 times the U.S. average of 86.
How affordable is housing in St. Croix County, Wisconsin?
The median home costs 2.3 times the median household income ($234,911 against $103,525), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,271 a month takes about 15% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in St. Croix County, Wisconsin?
Unemployment in St. Croix County, Wisconsin is only 2.6%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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