What the Pros Know
Market Snapshot
Zip Code 21557 | Allegany County, MD
1,782
Population
YoY
202233.9
Median Age
YoY
2022$40,625
Median Household Income
YoY
2022$222,500
Median Sale Price
25.8% MoM
80.2% YoY
6/20252
Homes Sold
100.0% MoM
50.0% YoY
6/20254.0
Months Inventory
33.3% MoM
14.3% YoY
6/202525
Days on Market
20 MoM
20 YoY
6/20258
Listings
33.3% MoM
0.0% YoY
6/2025145
Price per Sq Ft
5.7% MoM
3% YoY
6/2025
See 21557 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.