All Countries
Union, IL
Full City Profile · Illinois · McHenry County County
4.1
/5.0
A
Great
753
Population
896/sq mi density
$100,104
Median Income
$44,115 per capita
$224,600
Home Value
$413,839 Zillow
48°F
Avg Temperature
260 sunny days/yr
A
Overall
4.1 / 5.0
Strong
A+
Economy
4.9 / 5.0
$100,104 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$224,600 home value, /mo rent
C
Education
2.3 / 5.0
15.7% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+4.4%
570 → 595
over 10 years
Annual Pop. Growth
+0.43%
Compound annual growth rate
Median Income Change
+92.4%
$52,031 → $100,104
nominal, not inflation-adjusted
Annual Income Growth
+6.76%
Compound annual growth rate
Population Over Time
Total population for Union 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
613
+18 from 2023 (595)
Projected Median Income 2030
$158,238
+$58,134 from 2023 ($100,104)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 570 | — | $52,031 | — |
| 2015 | 562 | -1.4% | $64,688 | +24.3% |
| 2017 | 559 | -0.5% | $63,750 | -1.5% |
| 2019 | 550 | -1.6% | $67,083 | +5.2% |
| 2021 | 551 | +0.2% | $101,250 | +50.9% |
| 2023 | 595 | +8% | $100,104 | -1.1% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.