All Countries
Mason, IL
Full City Profile · Illinois · Clay County County
2.7
/5.0
C+
Fair
365
Population
283/sq mi density
$63,472
Median Income
$25,737 per capita
$89,300
Home Value
$189,775 Zillow
$588
Median Rent
41.7% income on rent
56°F
Avg Temperature
293 sunny days/yr
130
Violent Crime/100K
1,521 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$63,472 median income, 2.9% unemployment
A+
Affordability
5.0 / 5.0
$89,300 home value, $588/mo rent
F
Safety
1.0 / 5.0
130 violent crimes/100K
F
Education
1.5 / 5.0
5.8% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-6.2%
341 → 320
over 10 years
Annual Pop. Growth
-0.63%
Compound annual growth rate
Median Income Change
+62%
$39,191 → $63,472
nominal, not inflation-adjusted
Annual Income Growth
+4.94%
Compound annual growth rate
Population Over Time
Total population for Mason 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
306
-14 from 2023 (320)
Projected Median Income 2030
$88,955
+$25,483 from 2023 ($63,472)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 341 | — | $39,191 | — |
| 2015 | 339 | -0.6% | $40,313 | +2.9% |
| 2017 | 337 | -0.6% | $37,969 | -5.8% |
| 2019 | 335 | -0.6% | $40,417 | +6.4% |
| 2021 | 321 | -4.2% | $55,114 | +36.4% |
| 2023 | 320 | -0.3% | $63,472 | +15.2% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.