What the Pros Know
Market Snapshot
Zip Code 21157 | Carroll County, MD
39,816
Population
YoY
202241.1
Median Age
YoY
2022$96,406
Median Household Income
YoY
2022$525,000
Median Sale Price
7.1% MoM
16.7% YoY
6/2025114
Homes Sold
4.2% MoM
7.5% YoY
6/20250.7
Months Inventory
3.1% MoM
51.2% YoY
6/202528
Days on Market
10 MoM
20 YoY
6/202581
Listings
1.2% MoM
62.0% YoY
6/2025227
Price per Sq Ft
1.4% MoM
0.4% YoY
6/2025
See 21157 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.