| ZIP Code | 21757 |
|---|---|
| City | Keymar |
| State | Maryland (MD) |
| County | Carroll County |
| Area Code | 410/443/667 |
| Elevation | 357 ft |
| Latitude | 39.593861 |
|---|---|
| Longitude | -77.258139 |
| Timezone | New York (DST) |
| FIPS | 24021 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 42.2 yrs ↓ 9% since 2019 |
|---|---|
| Avg Household Size | 2.61 |
| Below Poverty | 1.3% ▼ 87% below avg |
| College Grads | 32.4% ▼ 16% below avg |
| Unemployment | 2.9% ▼ 41% below avg |
| No HS Diploma | 51 (2.8%) |
| HS Graduate | 739 (39.9%) |
| Some College | 328 (17.7%) |
| Associates | 135 (7.3%) |
| Bachelors | 105 (5.7%) |
| Graduate Degree | 495 (26.7%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $98,520 ▲ 29% above avg ↑ 22% since 2019 |
|---|---|
| Median Home Value | $414,300 ▲ 49% above avg ↑ 44% since 2019 |
| Home/Income Ratio | 4.2x (nat avg ~3.5x) |
| Median Rent | $1,345/mo ↑ 16% since 2019 |
| Total Units | 1,129 |
| Vacant Units | 61 |
| Avg HH Size | 2.61 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 1,129 |
|---|---|
| Vacant | 61 |
| Owner Occupied | 82.5% |
| Renter Occupied | 17.5% |
| Avg HH Size | 2.61 |
ZIP code 21757 is located in Keymar, Maryland, within Carroll County. With a population of 2,810, this is a sparsely populated ZIP code with a middle-aged community — the median age is 42.2 years. Economically, 21757 is a middle-income ZIP code: the median household income of $98,520 is above the national average.
Real estate in ZIP code 21757 represents a premium housing market. The median home value of $414,300 is above the national average. Renters can expect to pay around $1,345 per month in median rent. Homeownership is strong here — 82.5% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 44% since 2019.
The population of 21757 is primarily White (92.17%). Residents are moderately educated — 32.4% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 1.3%. Household income has grown by 22% since 2019.
The unemployment rate in 21757 stands at 2.9%, which is below the national average. About 14% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 79%.
Overall, ZIP code 21757 in Keymar, MD is characterized as middle-income, moderately educated, a middle-aged community, and predominantly owner-occupied. With 2,810 residents, a median household income of $98,520, and a median home value of $414,300, it offers a clear picture of life in this part of Maryland.