Checked
ZIP Code 20877
Gaithersburg, MD, Montgomery County
Population
38,546
Land area
5.6sq mi
People per sq mi
6,833
City
Gaithersburg
ZIP 20877 and nearby ZIP codes
ZIP 20877 at a glance
- ZIP 20877 (Gaithersburg) is about 11 times as dense as Maryland as a whole.
- The median household income is $92,800, 10% below the Maryland median of $103,678.
- A typical owner-occupied home is valued at $474,800 (13% above Maryland) and median rent is $1,887 a month.
Local data for ZIP 20877
Counts from official public data
Housing and community stats
ZIP 20877, American Community Survey 2020-2024
Median household income
$92,800
Poverty rate
12.0%
Median home value
$474,800
Prices +7.0% in a year
Median rent
$1,887/mo
Homeownership
43.1%
Bachelor's or higher
33.4%
Median age
36.8
Average commute
30.7 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
1,151
ZIP Business Patterns 2023
Employees
16,866
$998M annual payroll
PPP loans
$122M
1,541 loans
Campaign donations
$183K
44% D, 10% R, 2026 cycle
Environment and hazard risk
ZIP 20877, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: winter weather
Storm events since 1996
1,849
Countywide, mostly thunderstorm wind
Flood insurance policies
2,029
0.8% of homes, county
July high / Jan low
87° / 27°F
41.3 inches of rain a year
Health statistics
Share of adults in ZIP 20877, CDC PLACES estimates
Obesity
29.9%
U.S. 33.3% -3.4 pts
Diabetes
12.4%
U.S. 12.1% about the same
Smoking
10.2%
U.S. 12.8% -2.6 pts
Uninsured (18-64)
17.9%
U.S. 11.1% +6.8 pts
Frequently asked questions
- What city is ZIP code 20877?
- ZIP code 20877 is in Gaithersburg, MD (Montgomery County).
- What county is ZIP code 20877 in?
- ZIP code 20877 is mostly in Montgomery County, Maryland.
- How many people live in ZIP code 20877?
- About 38,546 people live in the 20877 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.