All Countries
Knollwood, IL
Full City Profile · Illinois · Lake County County
4.1
/5.0
A
Great
1,907
Population
3,126/sq mi density
$133,452
Median Income
$45,205 per capita
$372,500
Home Value
$615,993 Zillow
$1,733
Median Rent
34.8% income on rent
48°F
Avg Temperature
261 sunny days/yr
10
Violent Crime/100K
750 property/100K
A
Overall
4.1 / 5.0
Strong
A+
Economy
4.9 / 5.0
$133,452 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$372,500 home value, $1,733/mo rent
D
Safety
1.7 / 5.0
10 violent crimes/100K
A+
Education
4.6 / 5.0
45.6% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+21.4%
1,571 → 1,907
over 10 years
Annual Pop. Growth
+1.96%
Compound annual growth rate
Median Income Change
+72.1%
$77,525 → $133,452
nominal, not inflation-adjusted
Annual Income Growth
+5.58%
Compound annual growth rate
Population Over Time
Total population for Knollwood 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
2,185
+278 from 2023 (1,907)
Projected Median Income 2030
$195,163
+$61,711 from 2023 ($133,452)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 1,571 | — | $77,525 | — |
| 2015 | 1,613 | +2.7% | $82,619 | +6.6% |
| 2017 | 1,814 | +12.5% | $97,872 | +18.5% |
| 2019 | 1,665 | -8.2% | $103,750 | +6% |
| 2021 | 1,719 | +3.2% | $123,523 | +19.1% |
| 2023 | 1,907 | +10.9% | $133,452 | +8% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.