| ZIP Code | 21771 |
|---|---|
| City | Mount Airy |
| State | Maryland (MD) |
| County | Frederick County |
| Area Code | 227/240/301 |
| Elevation | 801 ft |
| Latitude | 39.394937 |
|---|---|
| Longitude | -77.158193 |
| Timezone | New York (DST) |
| FIPS | 24013 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 41.4 yrs ↓ 2% since 2019 |
|---|---|
| Avg Household Size | 3.00 |
| Below Poverty | 3.4% ▼ 66% below avg |
| College Grads | 55.1% ▲ 42% above avg |
| Unemployment | 3.8% ▼ 22% below avg |
| No HS Diploma | 126 (0.6%) |
| HS Graduate | 4,826 (22.6%) |
| Some College | 1,990 (9.3%) |
| Associates | 2,621 (12.3%) |
| Bachelors | 1,955 (9.2%) |
| Graduate Degree | 9,794 (46%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $154,844 ▲ 103% above avg ↑ 19% since 2019 |
|---|---|
| Median Home Value | $532,200 ▲ 91% above avg ↑ 29% since 2019 |
| Home/Income Ratio | 3.4x (nat avg ~3.5x) |
| Median Rent | $2,117/mo ↑ 40% since 2019 |
| Total Units | 11,401 |
| Vacant Units | 522 |
| Avg HH Size | 3.00 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 11,401 |
|---|---|
| Vacant | 522 |
| Owner Occupied | 92.9% |
| Renter Occupied | 7.1% |
| Avg HH Size | 3.00 |
ZIP code 21771 is located in Mount Airy, Maryland, within Frederick County. With a population of 32,827, this is a moderately populated ZIP code with a middle-aged community — the median age is 41.4 years. Economically, 21771 is a affluent ZIP code: the median household income of $154,844 is more than double the national average.
Real estate in ZIP code 21771 represents a premium housing market. The median home value of $532,200 is significantly above the national average. Renters can expect to pay around $2,117 per month in median rent. Homeownership is strong here — 92.9% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 29% since 2019.
The population of 21771 is primarily White (81.73%). Residents are well-educated — 55.1% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 3.4%. Household income has grown by 19% since 2019.
The unemployment rate in 21771 stands at 3.8%, which is below the national average. About 19% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 73%.
Overall, ZIP code 21771 in Mount Airy, MD is characterized as affluent, well-educated, a middle-aged community, and predominantly owner-occupied. With 32,827 residents, a median household income of $154,844, and a median home value of $532,200, it offers a clear picture of life in this part of Maryland.