City in Jefferson County, Alabama · 12.8 sq mi · 1,673 people per sq mi
About 21,000 people live in Mountain Brook. The typical household earns $201,479, and the median resident is 42.9 years old.
2026 projection
From 22,508 in 2020
Poverty rate 3.23%
Men 41.8 · Women 43.7
1950–2026
21,485
2026 projection
4.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1950–2026
21,485
2026 projection
4.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 21,485 | -176 | 0.81% |
|---|---|---|---|
| 2025 | 21,661 | -144 | 0.66% |
| 2024 | 21,805 | -13 | 0.06% |
| 2023 | 21,818 | -171 | 0.78% |
| 2022 | 21,989 | -267 | 1.20% |
| 2021 | 22,256 | -252 | 1.12% |
| 2020 | 22,508 | +2,321 | 11.50% |
| 2019 | 20,187 | -83 | 0.41% |
| 2018 | 20,270 | -56 | 0.28% |
| 2017 | 20,326 | -81 | 0.40% |
Showing 10 of 23 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 220 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 31 residents
73% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 73% | 76% | 70% |
| Never married | 19% | 21% | 17% |
| Divorced | 3% | 2% | 5% |
| Widowed | 5% | 1% | 8% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau