Gaithersburg city, Maryland
Official LSAD Designation: Gaithersburg city • Census GEOID: 2431175
• Montgomery County
Demographics & Population Profile
Population and demographics for Gaithersburg city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 71,113 | — | 2025 | Census |
| Median Age | 37.8 yrs | ±0.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 25,772 | ±648 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).