Unshakable ZIP Data 20878 | Gaithersburg, MD Housing Market
Gaithersburg · Montgomery County · Washington-Arlington-Alexandria, DC-VA-MD-WV metro · Maryland · Data updated June 19, 2026
The median sale price in ZIP 20878, Gaithersburg, Maryland is $749,777 at $316 per square foot. 197 single-family homes sold in the latest period, up 11.7 percent from a year earlier. Homes sit a median of 27 days on market with 2.8 months of supply. Sellers are getting 100.3 percent of list price and 40.9 percent of homes sold above asking.
Seller's market. No room for sloppy offers.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $779,440 | |
| Average price per sq ft | $329 | |
| Median sale price | $749,777 | |
| Median sale price per sq ft | $316 | |
| Median home size | 2,371 sq ft | |
| Median new listing price | $743,643 | +1.3% |
| National size rank | 322 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 197 | +11.7% |
| Median days on market | 27 days | |
| Months of supply | 2.8 months | |
| New listings | 305 | +10.4% |
| Active listings | 375 | +9.6% |
| Pending sales | 228 | -8.0% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 100.3% | -1.5 pts |
| Share sold above list | 40.9% | -13.7 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
These figures describe the single-family market for Gaithersburg, Maryland ZIP 20878. They are market context, not a substitute for sold comps or a formal appraisal.