All Countries
St. Augustine, IL
Full City Profile · Illinois · Warren County County
2.7
/5.0
C+
Fair
123
Population
208/sq mi density
$49,375
Median Income
$29,367 per capita
$52,700
Home Value
$88,245 Zillow
49°F
Avg Temperature
275 sunny days/yr
400
Violent Crime/100K
3,282 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$49,375 median income, 3.7% unemployment
A+
Affordability
5.0 / 5.0
$52,700 home value, /mo rent
F
Safety
1.0 / 5.0
400 violent crimes/100K (5% above avg)
F
Education
1.4 / 5.0
5.4% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-4.2%
119 → 114
over 10 years
Annual Pop. Growth
-0.43%
Compound annual growth rate
Median Income Change
+19.2%
$41,429 → $49,375
nominal, not inflation-adjusted
Annual Income Growth
+1.77%
Compound annual growth rate
Population Over Time
Total population for St. Augustine 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
111
-3 from 2023 (114)
Projected Median Income 2030
$55,827
+$6,452 from 2023 ($49,375)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 119 | — | $41,429 | — |
| 2015 | 118 | -0.8% | $42,500 | +2.6% |
| 2017 | 114 | -3.4% | $37,250 | -12.4% |
| 2019 | 112 | -1.8% | $44,250 | +18.8% |
| 2021 | 115 | +2.7% | $40,938 | -7.5% |
| 2023 | 114 | -0.9% | $49,375 | +20.6% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.