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Auburn, IL
Full City Profile · Illinois · Sangamon County County
3.4
/5.0
B
Good
4,357
Population
1,058/sq mi density
$79,475
Median Income
$36,953 per capita
$145,400
Home Value
$174,461 Zillow
$911
Median Rent
22.9% income on rent
55°F
Avg Temperature
302 sunny days/yr
86
Violent Crime/100K
64 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$79,475 median income, 2.8% unemployment
A+
Affordability
5.0 / 5.0
$145,400 home value, $911/mo rent
F
Safety
1.0 / 5.0
86 violent crimes/100K
B
Education
3.0 / 5.0
25.6% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-7.4%
4,816 → 4,461
over 10 years
Annual Pop. Growth
-0.76%
Compound annual growth rate
Median Income Change
+37.5%
$57,800 → $79,475
nominal, not inflation-adjusted
Annual Income Growth
+3.24%
Compound annual growth rate
Population Over Time
Total population for Auburn 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
4,229
-232 from 2023 (4,461)
Projected Median Income 2030
$99,350
+$19,875 from 2023 ($79,475)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 4,816 | — | $57,800 | — |
| 2015 | 4,786 | -0.6% | $63,448 | +9.8% |
| 2017 | 4,710 | -1.6% | $60,427 | -4.8% |
| 2019 | 4,628 | -1.7% | $57,465 | -4.9% |
| 2021 | 4,507 | -2.6% | $86,367 | +50.3% |
| 2023 | 4,461 | -1% | $79,475 | -8% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.