Mountain Brook Flag

Mountain Brook

County Seat:
No
Area (mi²):
12.841
State:
Alabama

Mountain Brook is a city located in Jefferson County, Alabama. Mountain Brook has a 2026 population of 21,299. Mountain Brook is currently declining at a rate of -0.93% annually and its population has decreased by -5.35% since the most recent census, which recorded a population of 22,504 in 2020.

The median household income in Mountain Brook is $201,479 with a poverty rate of 3.23%. The median age in Mountain Brook is 42.9 years: 41.8 years for males, and 43.7 years for females. For every 100 females there are 93.7 males.

21.3K
Total Population
1,659
Density (mi²)
-201 -0.93%
Growth

Mountain Brook Population

Mountain Brook Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202621,299-201-0.93%
202521,500-201-0.93%
202421,701-83-0.38%
202321,784-185-0.84%
202221,969-274-1.23%
202122,243-306-1.36%
202022,5042,31711.48%
201920,187-83-0.41%
201820,270-56-0.28%
201720,326-81-0.4%
201620,407-90-0.44%
201520,497-38-0.19%
201420,5353511.74%
201320,184-52-0.26%
201220,236-72-0.35%
201120,308-8-0.04%
201020,316-97-0.48%
200020,6047944.01%
199019,810920.47%
198019,7182441.25%
197019,4746,79453.58%
196012,6804,32151.69%
19508,35900%

Median Age

Overall: 42.9 years
Female: 43.7 years
Male: 41.8 years

Mountain Brook Adults

There are 15,624 adults, (3,822 of whom are seniors) in Mountain Brook.

Sex Ratio

Female: 11,370 (51.6%)
Male: 10,659 (48.4%)

Demographics

The racial composition of Mountain Brook includes 95.21% White, and smaller percentages for Asian, Black or African American, other race, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White20,97495.21%
Two or more races6773.07%
Asian1600.73%
Black or African American1370.62%
Other race610.28%
Native American200.09%
Race
Population ↓
Percentage (of total)
Two or more races1550.7%
White290.13%
Native American40.02%
Race
Population ↓
Percentage (of total)
White20,94595.08%
Two or more races5222.37%
Asian1600.73%
Black or African American1370.62%
Other race610.28%
Native American160.07%

Mountain Brook Marital Status

Economics and Income Statistics

Mountain Brook 's average per capita income is $119,826. Household income levels show a median of $201,479. The poverty rate stands at 3.23%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Families$250,001$383,308
Married Families$250,001-
Households$201,479$318,286
Non Families$80,338$115,614

$119,826

Average Income

$201,479

Median Household Income

3.23%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)