Unshakable ZIP Data 21220 | Middle River, MD Housing Market
Middle River · Baltimore County · Baltimore-Columbia-Towson, MD metro · Maryland · Data updated June 19, 2026
The median sale price in ZIP 21220, Middle River, Maryland is $337,400 at $189 per square foot. 126 single-family homes sold in the latest period, down 1.1 percent from a year earlier. Homes sit a median of 42 days on market with 3.1 months of supply. Sellers are getting 99.1 percent of list price and 33.6 percent of homes sold above asking.
Balanced market.
Value anchors
| Metric | Value | Year over year |
|---|---|---|
| Average single-family value | $338,394 | |
| Average price per sq ft | $189 | |
| Median sale price | $337,400 | |
| Median sale price per sq ft | $189 | |
| Median home size | 1,789 sq ft | |
| Median new listing price | $347,033 | -13.5% |
| National size rank | 1,817 |
Sales activity
| Metric | Value | Year over year |
|---|---|---|
| Homes sold | 126 | -1.1% |
| Median days on market | 42 days | |
| Months of supply | 3.1 months | |
| New listings | 177 | -8.5% |
| Active listings | 272 | +0.5% |
| Pending sales | 140 | -6.8% |
Pricing power
| Metric | Value | Year over year |
|---|---|---|
| Average sale-to-list ratio | 99.1% | -1.2 pts |
| Share sold above list | 33.6% | -3.4 pts |
Bedroom value anchors
Average values by bedroom count. Value anchors for orientation, not appraisals.
2-bedroom
$240,957
3-bedroom
$304,681
4-bedroom
$432,439
5-bedroom
$559,518
These figures describe the single-family market for Middle River, Maryland ZIP 21220. They are market context, not a substitute for sold comps or a formal appraisal.