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ZIP Code 21770
Monrovia, MD, Frederick County
Population
8,751
Land area
11.4sq mi
People per sq mi
764
City
Monrovia
ZIP 21770 and nearby ZIP codes
ZIP 21770 at a glance
- Households here earn a median of $183,571 a year, 77% more than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $632,500 (51% above Maryland).
Local data for ZIP 21770
Counts from official public data
Housing and community stats
ZIP 21770, American Community Survey 2020-2024
Median household income
$183,571
Poverty rate
1.5%
Median home value
$632,500
Prices +2.7% in a year
Homeownership
98.8%
Bachelor's or higher
54.8%
Median age
39.8
Average commute
35.2 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
150
ZIP Business Patterns 2023
Employees
1,461
$82.14M annual payroll
PPP loans
$11.36M
162 loans
Campaign donations
$17.79K
40% D, 9% R, 2026 cycle
Environment and hazard risk
ZIP 21770, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
1,546
Countywide, mostly thunderstorm wind
Flood insurance policies
501
0.6% of homes, county
July high / Jan low
84° / 25°F
47.9 inches of rain a year
Health statistics
Share of adults in ZIP 21770, CDC PLACES estimates
Obesity
32.9%
U.S. 33.3% about the same
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
8.2%
U.S. 12.8% -4.6 pts
Uninsured (18-64)
6.0%
U.S. 11.1% -5.1 pts
Cities in ZIP 21770
ZIP codes near 21770
| Name | Distance | Land area (sq mi) |
|---|---|---|
| 21754Monrovia | 2.4 mi | 21.8 |
| 21774Linganore | 4.3 mi | 14.2 |
| 20872Damascus | 4.8 mi | 19.9 |
| 20871Clarksburg | 5.8 mi | 22.9 |
| 21771Mount Airy | 6.1 mi | 89.5 |
| 21704Urbana | 6.2 mi | 26.6 |
| 21701Libertytown | 7.9 mi | 39.7 |
| 21705Frederick | 9 mi | 0 |
| 21717Buckeystown | 9.2 mi | 0.6 |
| 21762Libertytown | 9.3 mi | 0.4 |
| 20876Germantown | 9.6 mi | 10.9 |
| 20882Laytonsville | 10 mi | 37.8 |
Frequently asked questions
- What city is ZIP code 21770?
- ZIP code 21770 is in Monrovia, MD (Frederick County).
- What county is ZIP code 21770 in?
- ZIP code 21770 is mostly in Frederick County, Maryland.
- How many people live in ZIP code 21770?
- About 8,751 people live in the 21770 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.