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Seymour, IL
Full City Profile · Illinois · Piatt County County
1.5
/5.0
D
Poor
333
Population
3,700/sq mi density
$135,500
Home Value
$287,060 Zillow
51°F
Avg Temperature
275 sunny days/yr
153
Violent Crime/100K
497 property/100K
D
Overall
1.5 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
153 violent crimes/100K
D
Education
1.9 / 5.0
11.7% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+12.5%
296 → 333
over 10 years
Annual Pop. Growth
+1.18%
Compound annual growth rate
Population Over Time
Total population for Seymour 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
361
+28 from 2023 (333)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 296 | — | $24,792 | — |
| 2015 | 373 | +26% | $26,776 | +8% |
| 2017 | 312 | -16.4% | $32,177 | +20.2% |
| 2019 | 325 | +4.2% | — | — |
| 2021 | 289 | -11.1% | $107,500 | — |
| 2023 | 333 | +15.2% | — | — |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.