MO area data
Affton, MO
Affton, MO.
Population: 49,077 (Census ACS)
Home values & appreciation
- Median home value
- $250,896
- 1-year appreciation
- +2.1%
- 3-year appreciation
- +8.3%
- 5-year appreciation
- +23.3%
- 10-year appreciation
- +69.9%
- All-time peak (2026-07)
- $250,896
- House Price Index
- 403.5 (+4.3% YoY)
Market activity
- Median sale price
- $137,000
- Median list price
- $214,950
- Median days on market
- 194 days
- Sale-to-list ratio
- 98.4%
- Active listings
- 2
- 1-year forecast
- +1.7%
- Days to pending
- 14 days
- New listings (monthly)
- 78
Rents
- Typical rent
- $1,493/mo
- 1-year rent change
- +2.3%
- 1BR fair-market rent
- $1,000/mo
- 3BR fair-market rent
- $1,580/mo
Affordability
- Cost of living index (Low)
- 89.5 (100 = US avg)
- Electricity rate (state-level)
- 13.5¢/kWh
- Natural gas rate (state-level)
- $14.90/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Schools
- Total schools
- 8
- Elementary schools
- 4
- Middle schools
- 2
- High schools
- 2
Natural hazards & flood risk
- Overall hazard risk
- Relatively High
- Top hazards
- heatWave, tornado, earthquake, iceStorm, inlandFlooding
Climate (30-year normals)
- Average annual temperature
- 59.0°F
- Average high
- 68.0°F
- Average low
- 50.0°F
- Annual precipitation
- 46.0 in
Air quality
- Air quality rating
- Moderate
- Median AQI (annual)
- 58
- Days with Good air quality
- 89
- Days with Unhealthy air quality
- 2
Walkability & transit
- Walkability index
- 12.2 / 20
- Transit service frequency
- 476
Amenities
- National parks within ~60 mi
- 3
- Nearest national park
- Ulysses S Grant National Historic Site (1 mi)
- Nearest airport
- King Airport (7 mi)
- Nearest major airport
- St. Louis Lambert International Airport (STL) (14 mi)
- Hospitals nearby (~15 mi)
- 22
- Avg hospital rating
- 3.2 / 5
- Solar radiation rating
- Fair (4.2 kWh/m²/day)
Migration
- Net migration
- -2,472 tax filers
Housing stock
- Median year housing built
- 1,960
- Median annual property tax
- $2,699
- Mean commute to work
- 21 min
- Households with broadband internet
- 80.1%
Employment & development
- Total county employment
- 198,247
- Average weekly wage
- $1,480
- Top industries (by employment)
- Health Care, Accommodation & Food, Professional Services
- Annual residential building permits (county)
- 517
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 →