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Forest Lake, IL
Full City Profile · Illinois · McHenry County County
4.2
/5.0
A
Great
1,797
Population
5,134/sq mi density
$92,956
Median Income
$41,348 per capita
$318,300
Home Value
$444,921 Zillow
48°F
Avg Temperature
260 sunny days/yr
A
Overall
4.2 / 5.0
Strong
A+
Economy
4.5 / 5.0
$92,956 median income, 4.3% unemployment
A+
Affordability
4.8 / 5.0
$318,300 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
5.0 / 5.0
52.4% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+3.8%
1,731 → 1,797
over 10 years
Annual Pop. Growth
+0.37%
Compound annual growth rate
Median Income Change
+44.7%
$64,234 → $92,956
nominal, not inflation-adjusted
Annual Income Growth
+3.77%
Compound annual growth rate
Population Over Time
Total population for Forest 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 2013–2023 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
1,844
+47 from 2023 (1,797)
Projected Median Income 2030
$120,443
+$27,487 from 2023 ($92,956)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 1,731 | — | $64,234 | — |
| 2015 | 1,719 | -0.7% | $94,375 | +46.9% |
| 2017 | 1,688 | -1.8% | $125,197 | +32.7% |
| 2019 | 1,327 | -21.4% | $125,096 | -0.1% |
| 2021 | 1,476 | +11.2% | $134,821 | +7.8% |
| 2023 | 1,797 | +21.7% | $92,956 | -31.1% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.