All Countries
Seneca, IL
Full City Profile · Illinois · Grundy County County
3.1
/5.0
B
Good
2,525
Population
407/sq mi density
$91,065
Median Income
$42,714 per capita
$206,400
Home Value
$246,823 Zillow
$988
Median Rent
21.3% income on rent
50°F
Avg Temperature
275 sunny days/yr
649
Violent Crime/100K
2,509 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$91,065 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$206,400 home value, $988/mo rent
F
Safety
1.0 / 5.0
649 violent crimes/100K (71% above avg)
C
Education
2.0 / 5.0
12.9% bachelor's degree or higher
Housing Overview
Median Home Value
$206,400
27% below
US avg: $281,900
Median Rent
$988/mo
15% below
US avg: $1,163/mo
Homeownership Rate
76.6%
17% above US avg (65.4%)
Total Housing Units
1,002
Median year built: 1976
Home Value by Source
Census Median
$206,400
Zillow (ZHVI)
$246,823
Census ACS, Zillow ZHVI, Redfin median sale price
Ownership vs. Renting
76.6%
Owner-Occupied
23.4%
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:
$988/mo
Affordability & Housing Stock
Rent Burden
21.3%
of renters spending 30%+ of income on housing
31% below US avg (31.0%)
Median Year Built
1976
Average age of housing stock: 50 years
Homeownership Rate
76.6%
Complete Housing Data
Home Values
| Census Median Value | $206,400 |
| Zillow Home Value (ZHVI) | $246,823 |
Rent
| Census Median Rent | $988 |
| 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 | 76.6% |
| Renter-Occupied | 23.4% |
| Homeownership Rate | 76.6% |
| Total Housing Units | 1,002 |
| Median Year Built | 1976 |
| Rent Burden | 21.3% |