ZIP code 20899: Gaithersburg, MD
20899 is a ZIP code in Gaithersburg, Maryland, mainly in Montgomery County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metro area. About 57 people live here.
- Population
- 57
- Median household income
- $24,417
- Typical home value
- —
- Median rent
- $788gross, per month
- Median age
- 62.8
- Homeowners
- 0%of occupied homes
Shaded: ZIP code 20899's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 20899 details
| City | Gaithersburg |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Metro area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 0.1 sq mi |
| Population density | 518 people per sq mi |
| Bachelor's degree or higher | 0% of adults 25+ |
| Center coordinates | 39.14440, -77.21618 |
ZIP codes near 20899
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 20859 | Potomac, MD | 0.5 mi | — |
| 20875 | Germantown, MD | 0.5 mi | — |
| 20897 | Suburb Maryland Fac, MD | 0.5 mi | — |
| 20813 | Bethesda, MD | 0.5 mi | — |
| 20898 | Gaithersburg, MD | 0.5 mi | — |
| 20884 | Gaithersburg, MD | 0.5 mi | — |
| 20848 | Rockville, MD | 0.5 mi | — |
| 20827 | Bethesda, MD | 0.5 mi | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 20899
What city is ZIP code 20899?
ZIP code 20899 is in Gaithersburg, MD, in Montgomery County.
What county is ZIP code 20899 in?
20899 is mainly in Montgomery County, Maryland.
What is the population of ZIP code 20899?
About 57 people live in ZIP code 20899, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 20899 in?
20899 is in Eastern Time (UTC−5). It observes daylight saving time.