US ZIP Code
20899

Gaithersburg, MD

Montgomery County  ·  Maryland

● Active
👥 106 Population ↓ 64% since 2019
💰 $23,917 Median HH Income
▼ 69% below avg ↓ 33% since 2019
🎂 70.4 Median Age ↑ 57% since 2019
🎓 33.0% College Grads
▼ 15% below avg
📊 56.3% Unemployment
▲ 1050% above avg
ZIP Code Details
ZIP Code20899
CityGaithersburg
StateMaryland (MD)
CountyMontgomery County
Area Code227/240/301
Elevation504 ft
Latitude39.1444
Longitude-77.216175
TimezoneNew York (DST)
FIPS24031
ZIP TypeUnique
StatusActive
People & Population (ACS 2023)
♂ Male 48.1% (51) Female 51.9% (55) ♀

Race & Ethnicity

White: 30.2%Black: 69.8%Race
White30.2%
Black69.8%

Age Breakdown

25–44
13%
45–64
33%
65+
25%

Key Indicators

Median Age70.4 yrs ↑ 57% since 2019
Avg Household Size1.19
Below Poverty17.0% ▲ 70% above avg
College Grads33.0% ▼ 15% below avg
Unemployment56.3% ▲ 1050% above avg
No HS Diploma15 (14.2%)
HS Graduate38 (35.8%)
Some College18 (17%)
Graduate Degree35 (33%)

Education

No HS: 14.2%HS Grad: 35.8%Some College: 17%Graduate: 33%Edu
No HS14.2%
HS Grad35.8%
Some College17.0%
Graduate33.0%
Housing & Income

Housing Tenure

Renter: 100%Tenure
Renter100.0%

Financials

Median HH Income$23,917 ▼ 69% below avg ↓ 33% since 2019
Median Rent$835/mo ↓ 6% since 2019
Total Units89
Avg HH Size1.19

Income Distribution

Under $25k
57%
$25k–50k
43%
Employment & Commute

How People Get to Work

Public Transit
100%

Commute Time

30–45 min
100%
Frequently Asked Questions
ZIP code 20899 is in Gaithersburg, MD, in Montgomery County.
ZIP code 20899 is located in Maryland (MD).
ZIP code 20899 is in Montgomery County, MD.
ZIP 20899 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 20899 is 106 people (ACS 2023).
The median household income in ZIP code 20899 is $23,917 (ACS 2023).
Home value data not available.
About ZIP Code 20899

ZIP code 20899 is located in Gaithersburg, Maryland, within Montgomery County. With a population of 106, this is a sparsely populated ZIP code with an older community — the median age is 70.4 years. Economically, 20899 is a lower-income ZIP code: the median household income of $23,917 is well below the national average.

Renters can expect to pay around $835 per month in median rent.

The population of 20899 is majority Black (69.81%). Residents are moderately educated — 33.0% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 17.0%. Household income has declined by 33% since 2019.

The unemployment rate in 20899 stands at 56.3%, which is more than double the national average.

Overall, ZIP code 20899 in Gaithersburg, MD is characterized as lower-income, moderately educated, and an older community.