What the Pros Know
Market Snapshot
Zip Code 20620 | St. Mary, MD
1,325
Population
YoY
202246.8
Median Age
YoY
2022$154,128
Median Household Income
YoY
2022$457,500
Median Sale Price
15.4% MoM
6.9% YoY
6/20258
Homes Sold
11.1% MoM
14.3% YoY
6/20250.4
Months Inventory
12.5% MoM
78.6% YoY
6/202540
Days on Market
10 MoM
30 YoY
6/20253
Listings
0.0% MoM
0.0% YoY
6/2025227
Price per Sq Ft
60% MoM
8.9% YoY
6/2025
See 20620 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.