What the Pros Know
Market Snapshot
Zip Code 21787 | Carroll County, MD
10,879
Population
YoY
202241
Median Age
YoY
2022$83,669
Median Household Income
YoY
2022$422,500
Median Sale Price
1.2% MoM
4.0% YoY
6/202534
Homes Sold
6.3% MoM
21.4% YoY
6/20250.9
Months Inventory
8.1% MoM
117.4% YoY
6/202523
Days on Market
0 MoM
2 YoY
6/202531
Listings
14.8% MoM
47.6% YoY
6/2025207
Price per Sq Ft
0% MoM
3.6% YoY
6/2025
See 21787 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.