All Countries
Karnak, IL
Full City Profile · Illinois · Johnson County County
2.9
/5.0
C+
Fair
507
Population
280/sq mi density
$41,458
Median Income
$20,993 per capita
$66,700
Home Value
$74,104 Zillow
$708
Median Rent
26.3% income on rent
58°F
Avg Temperature
299 sunny days/yr
138
Violent Crime/100K
551 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$41,458 median income, 1.6% unemployment
A+
Affordability
5.0 / 5.0
$66,700 home value, $708/mo rent
F
Safety
1.0 / 5.0
138 violent crimes/100K
C
Education
2.4 / 5.0
17.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-13.7%
474 → 409
over 10 years
Annual Pop. Growth
-1.46%
Compound annual growth rate
Median Income Change
+3%
$40,234 → $41,458
nominal, not inflation-adjusted
Annual Income Growth
+0.3%
Compound annual growth rate
Population Over Time
Total population for Karnak 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
369
-40 from 2023 (409)
Projected Median Income 2030
$42,336
+$878 from 2023 ($41,458)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 474 | — | $40,234 | — |
| 2015 | 456 | -3.8% | $35,938 | -10.7% |
| 2017 | 446 | -2.2% | $29,453 | -18% |
| 2019 | 430 | -3.6% | $30,536 | +3.7% |
| 2021 | 409 | -4.9% | $33,056 | +8.3% |
| 2023 | 409 | +0% | $41,458 | +25.4% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.