Unshakable ZIP Data 21163 | Marriottsville, MD Housing Market
Marriottsville · Howard County · Baltimore-Columbia-Towson, MD metro · Maryland · Data updated June 19, 2026
The median sale price in ZIP 21163, Marriottsville, Maryland is $614,817 at $242 per square foot. 20 single-family homes sold in the latest period, down 18.5 percent from a year earlier. Homes sit a median of 32 days on market with 2.0 months of supply. Sellers are getting 100.5 percent of list price and 42.1 percent of homes sold above asking.
Balanced market.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $695,949 | |
| Average price per sq ft | $274 | |
| Median sale price | $614,817 | |
| Median sale price per sq ft | $242 | |
| Median home size | 2,541 sq ft | |
| Median new listing price | $636,559 | +1.9% |
| National size rank | 11,075 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 20 | -18.5% |
| Median days on market | 32 days | |
| Months of supply | 2.0 months | |
| New listings | 26 | -14.8% |
| Active listings | 36 | -4.0% |
| Pending sales | 25 | -9.5% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 100.5% | -0.4 pts |
| Share sold above list | 42.1% | +0.5 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
2-bedroom
$390,907
3-bedroom
$627,647
4-bedroom
$738,774
5-bedroom
$966,513
These figures describe the single-family market for Marriottsville, Maryland ZIP 21163. They are market context, not a substitute for sold comps or a formal appraisal.