Willow Lake, IL

Full City Profile · Illinois · Stephenson County County

3.5 /5.0

B+ Good

838 Population 307/sq mi density

$93,750 Median Income $50,571 per capita

$154,100 Home Value $120,745 Zillow

48°F Avg Temperature 260 sunny days/yr

193 Violent Crime/100K 2,563 property/100K

B+

Overall

3.5 / 5.0

Good overall score based on economy, affordability, safety and education

A+

Economy

4.9 / 5.0

$93,750 median income, 0.0% unemployment

A+

Affordability

5.0 / 5.0

$154,100 home value, /mo rent

Safety

1.0 / 5.0

193 violent crimes/100K

C+

Education

2.9 / 5.0

24.2% bachelor's degree or higher

Change Over Time (2021–2023)

Population Change

+5.4%

795 → 838

over 2 years

Annual Pop. Growth

+2.67%

Compound annual growth rate

Median Income Change

+26.6%

$74,038 → $93,750

nominal, not inflation-adjusted

Annual Income Growth

+12.53%

Compound annual growth rate

Population Over Time

Total population for Willow Lake across each available Census ACS release.

Median Household Income Over Time

Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).

Projected 2030

Simple projections extrapolating the 2021–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.

Projected Population 2030

1,008

+170 from 2023 (838)

Projected Median Income 2030

$214,215

+$120,465 from 2023 ($93,750)

Year-by-Year Detail

Year	Population	YoY %	Median Income	YoY %
2021	795	—	$74,038	—
2023	838	+5.4%	$93,750	+26.6%

Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.