ZIP codes
3
Gaithersburg, MD Demographics & ZIP Codes
Gaithersburg, Maryland demographics and median household income by ZIP code (in Montgomery County) — 3 ZIP codes — population 104,410 — median income $84,027 — avg. home value $568,850. Compare income, housing, and population across ZIP codes on US5.
Population
104,410
Median household income (avg.)
$84,027
112% of U.S. median
Average home value
$568,850
163% of U.S. median
Average rent
$1,499
129% of U.S. median
Median age (avg.)
49.7
Gaithersburg demographics
Gaithersburg, Maryland covers 3 ZIP codes primarily in Montgomery County, with a combined ZIP-area population of about 104,410.
Across ZIP codes with age data, the average median age is about 49.7 years.
Median household income in Gaithersburg
The average median household income across ZIP codes in Gaithersburg, Maryland is about $84,027 — about 25% below the MD ZIP average ($111,660), and about 12% above the U.S. median ($75,149).
Among ZIPs with income data, 20878 is near the top at about $142,062, while 20899 is near the bottom at about $23,917.
Housing in Gaithersburg
For housing in Gaithersburg, Maryland, the average median home value is about $568,850 and the average median rent is about $1,499.
The most populous ZIP in this set is 20878 (about 65,236 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Gaithersburg
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 20878 | Gaithersburg | Montgomery County | MD | 65,236 | $142,062 | $675,200 |
| 20877 | Gaithersburg | Montgomery County | MD | 39,068 | $86,103 | $462,500 |
| 20899 | Gaithersburg | Montgomery County | MD | 106 | $23,917 | — |
Frequently asked questions
What are the demographics of Gaithersburg?
Gaithersburg, Maryland has a combined ZIP-area population of about 104,410 across 3 ZIP codes (primarily Montgomery County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Gaithersburg?
The average median household income across ZIP codes in Gaithersburg, Maryland is about $84,027, about 25% below the state ZIP average ($111,660), and about 12% above the U.S. median ($75,149). Average median home value is about $568,850. Among ZIPs with data, 20878 is near the top ($142,062) and 20899 is near the bottom ($23,917).
How many ZIP codes are in Gaithersburg?
Gaithersburg, Maryland includes 3 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Gaithersburg?
This page lists ZIP codes in Gaithersburg, Maryland with population, median household income, and home value. Select a ZIP for a full demographics profile.