| ZIP Code | 21723 |
|---|---|
| City | Cooksville |
| State | Maryland (MD) |
| County | Howard County |
| Area Code | 410/443/667 |
| Elevation | 633 ft |
| Latitude | 39.329107 |
|---|---|
| Longitude | -77.002611 |
| Timezone | New York (DST) |
| FIPS | 24027 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 41.7 yrs ↓ 11% since 2019 |
|---|---|
| Avg Household Size | 2.66 |
| Below Poverty | 0.0% ▼ 100% below avg |
| College Grads | 85.5% ▲ 121% above avg |
| Unemployment | 0.0% ▼ 100% below avg |
| HS Graduate | 21 (4.9%) |
| Some College | 25 (5.9%) |
| Associates | 16 (3.7%) |
| Graduate Degree | 365 (85.5%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $250,001 ▲ 228% above avg ↑ 8% since 2019 |
|---|---|
| Median Home Value | $914,800 ▲ 228% above avg ↑ 38% since 2019 |
| Home/Income Ratio | 3.7x (nat avg ~3.5x) |
| Total Units | 221 |
| Avg HH Size | 2.66 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 221 |
|---|---|
| Owner Occupied | 94.6% |
| Renter Occupied | 5.4% |
| Avg HH Size | 2.66 |
ZIP code 21723 is located in Cooksville, Maryland, within Howard County. With a population of 587, this is a sparsely populated ZIP code with a middle-aged community — the median age is 41.7 years. Economically, 21723 is a affluent ZIP code: the median household income of $250,001 is more than double the national average.
Real estate in ZIP code 21723 represents among the most expensive housing markets in the country. The median home value of $914,800 is more than double the national average. Homeownership is strong here — 94.6% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 38% since 2019.
The population of 21723 is majority Asian (51.96%). Residents are highly educated — 85.5% hold a bachelor's degree or higher, which is more than double the national average. Household income has grown by 8% since 2019.
About 24% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 72%.
Overall, ZIP code 21723 in Cooksville, MD is characterized as affluent, highly educated, a middle-aged community, and predominantly owner-occupied. With 587 residents, a median household income of $250,001, and a median home value of $914,800, it offers a clear picture of life in this part of Maryland.