Gaithersburg is a city in Maryland, with a population of 71,113 and about 6,871 residents per square mile. The median household earns $112,467 a year, and the median home is worth $496,500.
Conditions
Humidity & wind
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UV index
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Sunrise & sunset
—
Local time
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Size & density
Land area
10 sq mi
Water excluded
Population density
6,871
People per square mile
Rank by population
#583
Of cities on this site
Rank by area
#811
Of cities on this site
Money & housing
Median household income
$112,467
US median ≈ $78,538
Median gross rent
$2,058
Per month
Homeownership
50.8%
US ≈ 65%
Average commute
29.4 min
One way
People
Median age
37.8
US median 39.1
Bachelor's degree +
52.5%
Age 25 and over
Foreign born
44.3%
Households
25,772
2.69 people each
What people here do for work
Professional & business services23.9%
Education & health care18%
Public administration9.9%
Construction8.1%
Top four industries · share of all workers · ACS 2024
Wealthiest person in Maryland
Name
Annette Lerner & family
Forbes, Apr 2025
Net worth
$5.5B
As of 25 Apr 2025 — not live
Lives in
Chevy Chase
Source of wealth
Real estate
Compiled from public reporting, not from an official dataset, and not independently verified.
Largest employer in Maryland · private sector
Employer
Johns Hopkins
Sector
Education & health
Compiled from public reporting, not from an official dataset, and not independently verified. Government employers are excluded.
Largest public company in Maryland
Company
Lockheed Martin
Revenue
$71.0B
Fiscal year 2024
Headquarters
Bethesda
Ticker
LMT
Compiled from public reporting, not from an official dataset, and not independently verified.