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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
Housing Overview
Median Home Value
$66,700
76% below
US avg: $281,900
Median Rent
$708/mo
39% below
US avg: $1,163/mo
Homeownership Rate
77.6%
19% above US avg (65.4%)
Total Housing Units
176
Median year built: 1967
Home Value by Source
Census Median
$66,700
Zillow (ZHVI)
$74,104
Census ACS, Zillow ZHVI, Redfin median sale price
Ownership vs. Renting
77.6%
Owner-Occupied
22.4%
Renter-Occupied
US avg: 65.4% owner-occupied
Fair Market Rents (HUD FY2026)
Studio
$774/mo
1 Bedroom
$854/mo
2 Bedroom
$1,063/mo
3 Bedroom
$1,370/mo
4 Bedroom
$1,561/mo
Census median rent:
$708/mo
Affordability & Housing Stock
Rent Burden
26.3%
of renters spending 30%+ of income on housing
15% below US avg (31.0%)
Median Year Built
1967
Average age of housing stock: 59 years
Homeownership Rate
77.6%
Complete Housing Data
Home Values
| Census Median Value | $66,700 |
| Zillow Home Value (ZHVI) | $74,104 |
Rent
| Census Median Rent | $708 |
| FMR Studio | $774 |
| FMR 1-Bedroom | $854 |
| FMR 2-Bedroom | $1,063 |
| FMR 3-Bedroom | $1,370 |
| FMR 4-Bedroom | $1,561 |
Market
Ownership & Stock
| Owner-Occupied | 77.6% |
| Renter-Occupied | 22.4% |
| Homeownership Rate | 77.6% |
| Total Housing Units | 176 |
| Median Year Built | 1967 |
| Rent Burden | 26.3% |