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Gaithersburg, MD
City in Montgomery County, Maryland. ZIP codes: 20877, 20878, 20879, 20899.
Population
69,825
Land area
10.3sq mi
People per sq mi
6,754
ZIP codes
4
Gaithersburg and its ZIP codes
Gaithersburg at a glance
- Gaithersburg is about 11 times as dense as Maryland as a whole.
- It is the 9th most populous of 527 cities and towns in Maryland.
- Households here earn a median of $112,467 a year, 8% more than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $496,500 (18% above Maryland) and median rent is $2,058 a month.
Local data for Gaithersburg, MD
Counts from official public data
Housing and community stats
Gaithersburg, MD, American Community Survey 2020-2024
Median household income
$112,467
Poverty rate
8.8%
Median home value
$496,500
Median rent
$2,058/mo
Homeownership
50.8%
Bachelor's or higher
52.5%
Median age
37.8
Average commute
29.4 min
Largest reported origins and ancestries: Salvadoran Americans (9,366), Indian Americans (4,401), Chinese Americans (4,200).
Economy and federal money
Jobs, pay, income and spending are for Montgomery County. PPP loans are for Gaithersburg.
Unemployment rate
3.5%
Aug 2026, -0.7 pts in a year
Average annual pay
$96,368
456,358 jobs, 2025
Income per person
$104,882
BEA, 2024
Federal spending
$17.22B
FY 2026, $16,210 per person
PPP loans
$123M
1,543 loans, 14,040 jobs reported
How people get to work
Gaithersburg, MD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone51.6%
- Carpooled10.9%
- Public transit7.1%
- Walked1.7%
- Bicycle0.4%
- Taxi, ride-hailing, motorcycle or other2.3%
- Worked from home26.0%
Average one-way commute: 29.4 minutes for people who do not work from home.
Environment and hazard risk
Gaithersburg, MD, 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
Hazards, floods and storm historyCheck a flood zone4 historic places
Health statistics
Share of adults in Gaithersburg, MD, CDC PLACES estimates
Obesity
26.9%
U.S. 33.3% -6.4 pts
Diabetes
10.5%
U.S. 12.1% -1.6 pts
Smoking
8.4%
U.S. 12.8% -4.4 pts
Uninsured (18-64)
12.2%
U.S. 11.1% +1.1 pts
ZIP codes in Gaithersburg
4 in or overlapping Gaithersburg. Population shown
Cities near Gaithersburg
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Washington GroveTown | 1.1 mi | 0.3 |
| Flower HillCensus-designated place | 2.4 mi | 2.1 |
| RedlandCensus-designated place | 2.5 mi | 7.2 |
| DerwoodCensus-designated place | 2.8 mi | 0.6 |
| Montgomery VillageCensus-designated place | 2.9 mi | 3.9 |
| North PotomacCensus-designated place | 3.5 mi | 6.5 |
| RockvilleCity | 3.9 mi | 13.6 |
| GermantownCensus-designated place | 4.6 mi | 17 |
| LaytonsvilleTown | 5.7 mi | 1 |
| OlneyCensus-designated place | 6.5 mi | 16.2 |
| Aspen HillCensus-designated place | 6.5 mi | 9.5 |
| DarnestownCensus-designated place | 6.6 mi | 16.4 |
| TravilahCensus-designated place | 6.7 mi | 15.9 |
| ClarksburgCensus-designated place | 6.9 mi | 9.6 |
| Leisure WorldCensus-designated place | 7.1 mi | 1.1 |
| North BethesdaCensus-designated place | 7.4 mi | 8.9 |
Frequently asked questions
- What county is Gaithersburg, MD in?
- Gaithersburg is in Montgomery County, Maryland.
- What ZIP codes are in Gaithersburg, MD?
- ZIP codes in or overlapping Gaithersburg include 20877, 20878, 20879, 20899.
- What is the population of Gaithersburg, MD?
- About 69,825 people live in Gaithersburg, based on American Community Survey 5-year estimates.
- What cities are near Gaithersburg?
- Nearby places include Washington Grove (1.1 mi), Flower Hill (2.4 mi), Redland (2.5 mi), Derwood (2.8 mi), Montgomery Village (2.9 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023