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Marietta, IL
Full City Profile · Illinois · Fulton County County
3.1
/5.0
B
Good
110
Population
407/sq mi density
$57,188
Median Income
$27,635 per capita
$81,700
Home Value
$68,013 Zillow
53°F
Avg Temperature
275 sunny days/yr
280
Violent Crime/100K
1,557 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$57,188 median income, 3.6% unemployment
A+
Affordability
5.0 / 5.0
$81,700 home value, /mo rent
F
Safety
1.0 / 5.0
280 violent crimes/100K
C+
Education
2.6 / 5.0
20.3% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-11.6%
112 → 99
over 10 years
Annual Pop. Growth
-1.23%
Compound annual growth rate
Median Income Change
+32%
$43,309 → $57,188
nominal, not inflation-adjusted
Annual Income Growth
+2.82%
Compound annual growth rate
Population Over Time
Total population for Marietta 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
91
-8 from 2023 (99)
Projected Median Income 2030
$69,478
+$12,290 from 2023 ($57,188)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 112 | — | $43,309 | — |
| 2015 | 110 | -1.8% | $43,792 | +1.1% |
| 2017 | 110 | +0% | $41,875 | -4.4% |
| 2019 | 108 | -1.8% | $50,313 | +20.2% |
| 2021 | 100 | -7.4% | $45,000 | -10.6% |
| 2023 | 99 | -1% | $57,188 | +27.1% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.