What the Pros Know
Market Snapshot
Zip Code 20121 | Fairfax County, VA
27,428
Population
YoY
202235.2
Median Age
YoY
2022$128,682
Median Household Income
YoY
2022$925,000
Median Sale Price
1.3% MoM
19.6% YoY
6/202515
Homes Sold
6.3% MoM
7.1% YoY
6/20250.3
Months Inventory
52.6% MoM
70% YoY
6/202545
Days on Market
8 MoM
27 YoY
6/20254
Listings
55.6% MoM
42.9% YoY
6/2025280
Price per Sq Ft
4.4% MoM
1.7% YoY
6/2025
See 20121 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.