| ZIP Code | 21770 |
|---|---|
| City | Monrovia |
| State | Maryland (MD) |
| County | Frederick County |
| Area Code | 227/240/301 |
| Elevation | 604 ft |
| Latitude | 39.350189 |
|---|---|
| Longitude | -77.25624 |
| Timezone | New York (DST) |
| FIPS | 24021 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 41.2 yrs ↓ 7% since 2019 |
|---|---|
| Avg Household Size | 3.26 |
| Below Poverty | 1.4% ▼ 86% below avg |
| College Grads | 60.1% ▲ 55% above avg |
| Unemployment | 2.2% ▼ 56% below avg |
| No HS Diploma | 10 (0.2%) |
| HS Graduate | 946 (17.3%) |
| Some College | 639 (11.7%) |
| Associates | 589 (10.8%) |
| Bachelors | 332 (6.1%) |
| Graduate Degree | 2,959 (54%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $184,464 ▲ 142% above avg ↑ 33% since 2019 |
|---|---|
| Median Home Value | $599,700 ▲ 115% above avg ↑ 43% since 2019 |
| Home/Income Ratio | 3.3x (nat avg ~3.5x) |
| Total Units | 2,448 |
| Vacant Units | 54 |
| Avg HH Size | 3.26 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 2,448 |
|---|---|
| Vacant | 54 |
| Owner Occupied | 98.0% |
| Renter Occupied | 2.1% |
| Avg HH Size | 3.26 |
ZIP code 21770 is located in Monrovia, Maryland, within Frederick County. With a population of 7,815, this is a lightly populated ZIP code with a middle-aged community — the median age is 41.2 years. Economically, 21770 is a affluent ZIP code: the median household income of $184,464 is more than double the national average.
Real estate in ZIP code 21770 represents a premium housing market. The median home value of $599,700 is more than double the national average. Homeownership is strong here — 98.0% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 43% since 2019.
The population of 21770 is primarily White (76.02%). Residents are highly educated — 60.1% hold a bachelor's degree or higher, which is significantly above the national average. Poverty affects a relatively small share of residents at 1.4%. Household income has grown by 33% since 2019.
The unemployment rate in 21770 stands at 2.2%, which is well below the national average. A notably high share of workers — 26% — work from home, reflecting the professional makeup of the area. As in most parts of the country, driving alone is the dominant commute mode at 65%.
Overall, ZIP code 21770 in Monrovia, MD is characterized as affluent, highly educated, a middle-aged community, and predominantly owner-occupied. With 7,815 residents, a median household income of $184,464, and a median home value of $599,700, it offers a clear picture of life in this part of Maryland.