Unshakable ZIP Data 20877 | 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 20877, Gaithersburg, Maryland is $437,370 at $247 per square foot. 43 single-family homes sold in the latest period, down 19.9 percent from a year earlier. Homes sit a median of 48 days on market with 4.1 months of supply. Sellers are getting 100.3 percent of list price and 42.9 percent of homes sold above asking.
Balanced market.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $535,082 | |
| Average price per sq ft | $303 | |
| Median sale price | $437,370 | |
| Median sale price per sq ft | $247 | |
| Median home size | 1,768 sq ft | |
| Median new listing price | $510,635 | +7.1% |
| National size rank | 2,194 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 43 | -19.9% |
| Median days on market | 48 days | |
| Months of supply | 4.1 months | |
| New listings | 68 | -12.8% |
| Active listings | 105 | +7.5% |
| Pending sales | 56 | +1.4% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 100.3% | -0.8 pts |
| Share sold above list | 42.9% | -7.1 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
1-bedroom
$166,875
2-bedroom
$208,234
3-bedroom
$459,153
4-bedroom
$608,063
5-bedroom
$679,399
These figures describe the single-family market for Gaithersburg, Maryland ZIP 20877. They are market context, not a substitute for sold comps or a formal appraisal.