Mountain Brook city, Alabama
Official LSAD Designation: Mountain Brook city • Census GEOID: 0151696
• Jefferson County
Demographics & Population Profile
Population and demographics for Mountain Brook city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 21,661 | — | 2025 | Census |
| Median Age | 42.9 yrs | ±2.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 8,426 | ±370 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).