Area data
Gwynn oak, MD — ZIP 21244
Population: 38,208 (Census ACS)
Home values & appreciation
- Median home value
- $329,183
- 1-year appreciation
- -0.1%
- 3-year appreciation
- +3.4%
- 5-year appreciation
- +13.5%
- 10-year appreciation
- +64.9%
- All-time peak (2025-05)
- $329,470
- House Price Index
- 367.5 (+0.7% YoY)
Market activity
- Median sale price
- $166,950
- Median list price
- $222,250
- Median days on market
- 32.5 days
- Sale-to-list ratio
- 93.4%
- Active listings
- 1
- 1-year forecast
- +0.3%
- Days to pending
- 30 days
- New listings (monthly)
- 21
Rents
- Typical rent
- $1,528/mo
- 1-year rent change
- +1.1%
- 1BR fair-market rent
- $1,437/mo
- 3BR fair-market rent
- $2,216/mo
Affordability
- Cost of living index (Above Average)
- 108.0 (100 = US avg)
- Electricity rate (state-level)
- 19.5¢/kWh
- Natural gas rate (state-level)
- $16.10/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Schools
- Total schools
- 3
- Elementary schools
- 3
- Middle schools
- 0
- High schools
- 0
- Charter schools
- 1
Natural hazards & flood risk
- Overall hazard risk
- Relatively High
- Top hazards
- winterWeather, coldWave, heatWave, inlandFlooding, lightning
- FEMA flood zone
- X
- Flood risk level
- Minimal
Climate (30-year normals)
- Annual precipitation
- 52.8 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 45
- Days with Good air quality
- 228
- Days with Unhealthy air quality
- 3
Walkability & transit
- Walkability index
- 11.5 / 20
- Transit service frequency
- 516
Amenities
- National parks within ~60 mi
- 57
- Nearest national park
- Star-Spangled Banner National Historic Trail (10 mi)
- Nearest airport
- St John Airport (10 mi)
- Nearest major airport
- Baltimore/Washington International Thurgood Marshall Airport (BWI) (13 mi)
- Hospitals nearby (~15 mi)
- 22
- Avg hospital rating
- 3.2 / 5
- Solar radiation rating
- Fair (4.1 kWh/m²/day)
Migration
- Net migration
- -2,817 tax filers
Housing stock
- Median year housing built
- 1,977
- Median annual property tax
- $3,025
- Mean commute to work
- 26 min
- Households with broadband internet
- 77.4%
Employment & development
- Total county employment
- 269,861
- Average weekly wage
- $1,522
- Top industries (by employment)
- Health Care, Education, Professional Services
- Annual residential building permits (county)
- 866
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 →