What the Pros Know
Market Snapshot
Zip Code 21057 | Baltimore County, MD
4,530
Population
YoY
202245.5
Median Age
YoY
2022$163,462
Median Household Income
YoY
2022$673,500
Median Sale Price
6.1% MoM
1.3% YoY
6/202516
Homes Sold
11.1% MoM
77.8% YoY
6/20250.2
Months Inventory
43.8% MoM
76.6% YoY
6/202524
Days on Market
2 MoM
4 YoY
6/20253
Listings
50.0% MoM
62.5% YoY
6/2025217
Price per Sq Ft
3.8% MoM
3.4% YoY
6/2025
See 21057 on Zillow
1. Population Data from U.S. Census Bureau.
2. Sales Data provided by Redfin, a national real estate brokerage.
MoM = Month over Month. The percentage change from the previous month to the current month.
YoY = Year over Year. The percentage change from the same period the previous year to the current period.