What the Pros Know
Market Snapshot
Zip Code 20630 | St. Mary, MD
307
Population
YoY
202254.8
Median Age
YoY
2022$193,274
Median Household Income
YoY
2022$682,000
Median Sale Price
0.5% MoM
1.5% YoY
6/20253
Homes Sold
0.0% MoM
0.0% YoY
6/20251.7
Months Inventory
66.7% MoM
16.7% YoY
6/2025540
Days on Market
475 MoM
419 YoY
6/20255
Listings
66.7% MoM
37.5% YoY
6/2025253
Price per Sq Ft
67.1% MoM
12.4% YoY
6/2025
See 20630 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.