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Lake Petersburg, IL
Full City Profile · Illinois · Sangamon County County
4.2
/5.0
A
Great
769
Population
425/sq mi density
$124,643
Median Income
$67,272 per capita
$336,200
Home Value
$202,729 Zillow
52°F
Avg Temperature
302 sunny days/yr
A
Overall
4.2 / 5.0
Strong
A+
Economy
5.0 / 5.0
$124,643 median income, 1.6% unemployment
A+
Affordability
5.0 / 5.0
$336,200 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A
Education
4.2 / 5.0
40.6% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+14.4%
672 → 769
over 10 years
Annual Pop. Growth
+1.36%
Compound annual growth rate
Median Income Change
+61.1%
$77,353 → $124,643
nominal, not inflation-adjusted
Annual Income Growth
+4.89%
Compound annual growth rate
Population Over Time
Total population for Lake Petersburg 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
845
+76 from 2023 (769)
Projected Median Income 2030
$174,103
+$49,460 from 2023 ($124,643)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 672 | — | $77,353 | — |
| 2015 | 628 | -6.5% | $76,513 | -1.1% |
| 2017 | 574 | -8.6% | $78,550 | +2.7% |
| 2019 | 449 | -21.8% | $74,500 | -5.2% |
| 2021 | 665 | +48.1% | $105,202 | +41.2% |
| 2023 | 769 | +15.6% | $124,643 | +18.5% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.