IL area data
Grafton, IL
Grafton, IL.
Population: 1,814 (Census ACS)
Home values & appreciation
- Median home value
- $279,058
- 1-year appreciation
- +4.0%
- 3-year appreciation
- +12.4%
- 5-year appreciation
- +15.9%
- 10-year appreciation
- +48.2%
- All-time peak (2026-03)
- $280,611
- House Price Index
- 325.3 (+6.1% YoY)
Market activity
- Median sale price
- $232,500
- Median list price
- $376,000
- Median days on market
- 177 days
- Sale-to-list ratio
- 90.2%
- Active listings
- 14
- 1-year forecast
- +2.1%
Rents
- 2-bedroom fair-market rent (HUD reference)
- $990/mo
- 3BR fair-market rent
- $1,270/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
- 2
- Elementary schools
- 1
- Middle schools
- 0
- High schools
- 1
Natural hazards & flood risk
- Overall hazard risk
- Very Low
- Top hazards
- heatWave
- FEMA flood zone
- A20
- Flood risk level
- High
Climate (30-year normals)
- Average annual temperature
- 56.0°F
- Average high
- 67.0°F
- Average low
- 46.0°F
- Annual precipitation
- 40.9 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 48
- Days with Good air quality
- 199
- Days with Unhealthy air quality
- 1
Walkability & transit
- Walkability index
- 5.7 / 20
- Transit service frequency
- -99,999
Amenities
- National parks within ~60 mi
- 3
- Nearest national park
- Gateway Arch National Park (31 mi)
- Nearest airport
- St Charles County Regional Airport/Smartt Field (6 mi)
- Nearest major airport
- St. Louis Lambert International Airport (STL) (19 mi)
- Hospitals nearby (~15 mi)
- 10
- Avg hospital rating
- 3.1 / 5
- Solar radiation rating
- Fair (4.2 kWh/m²/day)
Migration
- Net migration
- -48 tax filers
Housing stock
- Median year housing built
- 1,987
- Median annual property tax
- $3,431
- Mean commute to work
- 34 min
- Households with broadband internet
- 56.6%
Employment & development
- Total county employment
- 4,080
- Average weekly wage
- $799
- Top industries (by employment)
- Accommodation & Food, Health Care, Construction
- Annual residential building permits (county)
- 24
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 →