IL area data
Big rock, IL
Big rock, IL.
Population: 2,081 (Census ACS)
Home values & appreciation
- Median home value
- $422,643
- 1-year appreciation
- +5.8%
- 3-year appreciation
- +16.8%
- 5-year appreciation
- +33.7%
- 10-year appreciation
- +74.5%
- All-time peak (2026-07)
- $422,643
- House Price Index
- 325.3 (+6.1% YoY)
Market activity
- Median sale price
- $210,000
- Median list price
- $250,000
- Median days on market
- 37 days
- Sale-to-list ratio
- 84.0%
- Active listings
- 1
- 1-year forecast
- +2.3%
Rents
- 2-bedroom fair-market rent (HUD reference)
- $1,770/mo
- 3BR fair-market rent
- $2,350/mo
Affordability
- Cost of living index (Average)
- 97.3 (100 = US avg)
- Electricity rate (state-level)
- 17.7¢/kWh
- Natural gas rate (state-level)
- $11.30/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Schools
- Total schools
- 1
- Elementary schools
- 0
- Middle schools
- 1
- High schools
- 0
Natural hazards & flood risk
- Overall hazard risk
- Relatively High
- Top hazards
- coldWave, inlandFlooding, lightning, tornado, drought
- FEMA flood zone
- A
- Flood risk level
- High
Climate (30-year normals)
- Average annual temperature
- 50.0°F
- Average high
- 60.0°F
- Average low
- 39.0°F
- Annual precipitation
- 35.9 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 46
- Days with Good air quality
- 178
- Days with Unhealthy air quality
- 5
Walkability & transit
- Walkability index
- 4.8 / 20
- Transit service frequency
- -99,999
Amenities
- National parks within ~60 mi
- 1
- Nearest national park
- Pullman National Historical Park (49 mi)
- Nearest airport
- J Maddock Airport (1 mi)
- Nearest major airport
- Dupage Airport (DPA) (19 mi)
- Hospitals nearby (~15 mi)
- 5
- Avg hospital rating
- 3.8 / 5
- EV charging stations (within 10 mi)
- 40
- Solar radiation rating
- Fair (3.9 kWh/m²/day)
Migration
- Net migration
- -850 tax filers
Housing stock
- Median year housing built
- 1,962
- Median annual property tax
- $7,747
- Mean commute to work
- 13 min
- Households with broadband internet
- 85.4%
Employment & development
- Total county employment
- 182,988
- Average weekly wage
- $1,142
- Top industries (by employment)
- Health Care, Administrative Services, Accommodation & Food
- Annual residential building permits (county)
- 1,643
Area data compiled from public government, academic, and industry research feeds. Data sources →
Data last updated
Most recent source refresh: Aug 2026. See all data sources →