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Swansea, IL
Full City Profile · Illinois · St. Clair County County
3.7
/5.0
B+
Good
14,603
Population
2,254/sq mi density
$84,367
Median Income
$44,262 per capita
$211,700
Home Value
$256,641 Zillow
$1,178
Median Rent
24.6% income on rent
58°F
Avg Temperature
293 sunny days/yr
149
Violent Crime/100K
1,608 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$84,367 median income, 3.1% unemployment
A+
Affordability
5.0 / 5.0
$211,700 home value, $1,178/mo rent
F
Safety
1.0 / 5.0
149 violent crimes/100K
A
Education
4.4 / 5.0
43.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+5.9%
13,716 → 14,526
over 10 years
Annual Pop. Growth
+0.58%
Compound annual growth rate
Median Income Change
+28.6%
$65,620 → $84,367
nominal, not inflation-adjusted
Annual Income Growth
+2.54%
Compound annual growth rate
Population Over Time
Total population for Swansea 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
15,126
+600 from 2023 (14,526)
Projected Median Income 2030
$100,560
+$16,193 from 2023 ($84,367)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 13,716 | — | $65,620 | — |
| 2015 | 13,576 | -1% | $68,078 | +3.7% |
| 2017 | 13,519 | -0.4% | $73,534 | +8% |
| 2019 | 13,353 | -1.2% | $77,517 | +5.4% |
| 2021 | 14,210 | +6.4% | $80,331 | +3.6% |
| 2023 | 14,526 | +2.2% | $84,367 | +5% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.