What the Pros Know
Market Snapshot
Zip Code 63121 | St. Louis County, MO
24,126
Population
YoY
202238.3
Median Age
YoY
2022$39,668
Median Household Income
YoY
2022$125,000
Median Sale Price
3.7% MoM
28.2% YoY
6/202569
Homes Sold
4.5% MoM
2.8% YoY
6/20251.2
Months Inventory
17.7% MoM
39.5% YoY
6/202549
Days on Market
10 MoM
26 YoY
6/202580
Listings
23.1% MoM
17.6% YoY
6/202593
Price per Sq Ft
16.5% MoM
2.4% YoY
6/2025
See 63121 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.