Mountain Brook, AL demographics:
population, income, and more

Total population
22,029
-0.6% year-over-year change
Median household income
$201,479/yr
5.4% year-over-year change
Housing units
8,965
1.7% year-over-year change

Mountain Brook population

How many people live in Mountain Brook

Mountain Brook is home to 22,029 residents, according to the most recent Census data. Gender-wise, 48.4% of Mountain Brook locals are male, and 51.6% are female.

Total population
22,029
-0.6% year-over-year change
Gender ratio
Male
48.4%
10,659
Female
51.6%
11,370
Value Percent YoY change
Male 10,659 48.4% -2.1%
Female 11,370 51.6% 0.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Mountain Brook is 43, with the population distributed as follows: about 23.3% are children under 15, then 9.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 19.4% of the population, while another 30.3% fall into the 45 to 64 bracket. Finally, around 17.4% are 65 or older.

Median age
42.9
Age breakdown
Under 15
23.3%
15 to 24
9.6%
25 to 44
19.4%
45 to 64
30.3%
Over 65
17.4%
Value Percent YoY change
Under 15 5,136 23.3% -4.4%
15 to 24 2,125 9.6% 2.1%
25 to 44 4,277 19.4% -8.3%
45 to 64 6,669 30.3% 5.9%
Over 65 3,822 17.4% 2.1%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Mountain Brook, 97% of the population are US-born citizens, while 2.1% have gained naturalized citizenship. At the same time, 1% of residents are non-citizens. As for race, 95.2% of locals are Caucasian, 0.6% are African American and 0.7% have Asian roots. There’s also a share of 3.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97%
Non-U.S.-born citizens
2.1%
Non-citizens
1%
Value Percent YoY change
U.S.-born citizens 21,360 97% -0.7%
Non-U.S.-born citizens 454 2.1% 1.6%
Non-citizens 215 1% 8.0%
Racial breakdown
White
95.2%
Black or African American
0.6%
American Indian and Alaska Native
0.1%
Asian
0.7%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.1%
Other
0.3%
Value Percent
White 20,974 95.2%
Black or African American 137 0.6%
American Indian and Alaska Native 20 0.1%
Asian 160 0.7%
Two or more races 677 3.1%
Other 61 0.3%

Households in Mountain Brook

A peek inside Mountain Brook households

Mountain Brook has 8,426 households, with an average of 3 members in each. Of these, 75.7% are families, while the remaining 24.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
8,426
1.2% year-over-year change
Average people per household
3
Non-family households
2,048
Family households
6,378
Value Percent YoY change
Non-family households 2,048 24.3% 6.1%
Family households 6,378 75.7% -0.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Mountain Brook

The housing landscape of Mountain Brook

Mountain Brook's housing consists of 8,965 units, with 85% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 2.8% and offer a more compact, shared living style.

Housing units
8,965
1.7% year-over-year change
Housing types
Value Percent
1 unit, detached 7,620 85%
1 unit, attached 249 2.8%
2 units 90 1%
3 or 4 units 307 3.4%
5 to 9 units 108 1.2%
10 to 19 units 226 2.5%
20 to 49 units 13 0.2%
50 or more units 352 3.9%
Homes built since 2020
68
36.0% year-over-year change

The age of buildings in Mountain Brook

In Mountain Brook, the median construction year is 1964. About 14.4% of homes were built before the 1940s, with another 5% going up by 1949. Most development happened in the second half of the 20th century. Then, 5.4% of homes were added from 2000 to 2009, 6.8% between 2010 and 2019, and 0.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,289 14.4% 4.7%
Built between 1940 and 1949 446 5% 1.6%
Built between 1950 and 1959 1,955 21.8% 1.5%
Built between 1960 and 1969 1,895 21.1% 9.9%
Built between 1970 and 1979 1,225 13.7% -1.6%
Built between 1980 and 1989 597 6.7% 14.2%
Built between 1990 and 1999 393 4.4% -28.6%
Built between 2000 and 2009 488 5.4% 3.8%
Built between 2010 and 2019 609 6.8% -7.9%
Built in 2020 or later 68 0.8% 36.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Mountain Brook occupancy rates

Out of the 8,426 occupied housing units in Mountain Brook, 89.9% are owner-occupied, while 10.1% are lived in by tenants. Meanwhile, 6% of all homes on the local market sit vacant.

Occupied housing units
8,426
1.2% year-over-year change
Occupancy breakdown
Renter occupied
850
Owner occupied
7,576
Value Percent YoY
change
Renter occupied 850 10.1% -2.8%
Owner occupied 7,576 89.9% 1.6%
Unoccupied housing units
6.0%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Mountain Brook housing costs

Housing costs in Mountain Brook come to a median of $2,625 per month, while tenants specifically pay a median gross rent of $1,456.

Median housing costs per month
$2,625/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Mountain Brook
$1,456/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Mountain Brook

Mountain Brook education at a glance

About 5.4% of the population in Mountain Brook went to high school, while 8.1% pursued college studies. Another 0.9% earned an associate degree and 47.6% hold a bachelor’s. Meanwhile, 37.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 8 0% -33.3%
High school diploma 846 5.4% 12.2%
College diploma 1,260 8.1% -3.2%
Associate degree 139 0.9% -16.3%
Bachelor's degree 7,443 47.6% -2.2%
Graduate degree 5,928 37.9% 4.2%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Mountain Brook

How much people earn in Mountain Brook

The average annual household income in Mountain Brook was $318,286 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +5.2% change from the previous year. At the same time, the median income stood at $201,479, reflecting a +5.4% shift over the same period.

Average household income in Mountain Brook
$318,286/year
5.2% year-over-year change
Median household income in Mountain Brook
$201,479/year
5.4% year-over-year change

Mountain Brook income by age

In Mountain Brook, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $232,614. Those with someone between 45 and 64 in charge, often well established professionally, earn $250,001 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $61,029, while those led by someone over 65, many of whom may be retired, have about $129,286 in earnings. Overall, 96.7% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $61,029 4.8%
25 - 44 $232,614 23.6%
45 - 64 $250,001 0.0%
Over 65 $129,286 15.8%
Above poverty level
20,922
Below poverty level
704
Value Percent YoY
change
Above poverty level 20,922 96.7% -0.6%
Below poverty level 704 3.3% 18.5%

Average renter income in Mountain Brook

To get a better sense of what renters earn on average in Mountain Brook, their median household income was $98,667 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 17.7%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$98,667
Rent-to-income ratio
17.7%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Mountain Brook

Workforce and job types in Mountain Brook

The job market in Mountain Brook is powered by 10,277 working residents, spread across a range of industries and roles. 95.7% of the working population are employed in professional or administrative positions, while 4.3% are in hands-on or service-based jobs. Also, 18.4% run their own businesses, 62.3% are employed by private companies, and 10.8% work in the public sector.

Workforce demographics

Working population
10,277
4.6% year-over-year change
White collar
9,833
Blue collar
444
Value Percent YoY change
White collar 9,833 95.7% 3.9%
Blue collar 444 4.3% 22.3%
Employer type
Self employees
18.4%
Private companies
62.3%
Governmental workers
10.8%
Not for profit companies
8.5%
Value Percent YoY change
Self employees 1,886 18.4% 7.5%
Private companies 6,405 62.3% 3.5%
Governmental workers 1,112 10.8% 3.4%
Not for profit companies 874 8.5% 8.2%
Unemployment rate
1.2%
19.8% year-over-year change

Available workforce

The unemployment rate in Mountain Brook stands at 1.2%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Mountain Brook

How people get around in Mountain Brook

Commuting methods vary: 82% of residents travel by personal vehicle and 0.2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 8,377 82% 3.7%
Bicycle 37 0.4% 27.6%
Walk 23 0.2% -4.2%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Mountain Brook by zipcode?

Zipcode Population Number of households Median income Average income
35213 15,603 6,621 $159,824 $266,569
35223 10,666 4,308 $168,278 $249,333
35243 18,176 8,825 $99,645 $163,598

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FAQs about Mountain Brook demographics 

What is the total population of Mountain Brook?

Mountain Brook has a total population of 22,029 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -0.6% compared to a year ago.

What is the gender ratio in Mountain Brook?

The gender ratio in Mountain Brook is as follows:
  • 48.4% males (10,659 residents)
  • 51.6% females (11,370 residents)

What is the median age in Mountain Brook?

The median age in Mountain Brook is 42.9.

What is the age distribution of the population in Mountain Brook?

The age distribution in Mountain Brook is as follows:
  • Under 15: 23.3% (5,136 residents)
  • Ages 15-24: 9.6% (2,125 residents)
  • Ages 25-44: 19.4% (4,277 residents)
  • Ages 45-64: 30.3% (6,669 residents)
  • Over 65: 17.4% (3,822 residents)

What is the racial and ethnic makeup of Mountain Brook?

The racial and ethnic makeup of Mountain Brook is as follows:
  • White: 95.2% (20,974 residents)
  • Black or African American: 0.6% (137 residents)
  • American Indian and Alaska Native: 0.1% (20 residents)
  • Asian: 0.7% (160 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 3.1% (677 residents)
  • Other: 0.3% (61 residents)

What percentage of the population in Mountain Brook are U.S.-born citizens?

U.S.-born citizens represent 97% of the population in Mountain Brook.

How many housing units are there in Mountain Brook?

There are 8,965 housing units in Mountain Brook, reflecting a +1.7% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Mountain Brook and what is the average household size?

Mountain Brook has a total of 8,426 households, with an average of 3 people in each.

What is the median household income in Mountain Brook?

Mountain Brook has a median household income of $201,479, representing a +5.4% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Mountain Brook?

The employment rate is 98.8% in Mountain Brook, with a workforce of 10,277 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 95.7% (9,833 residents)
  • Blue-collar workers: 4.3% (444 residents)

Places of employment:
  • Self-employed: 18.4% (1,886 residents)
  • Private companies: 62.3% (6,405 residents)
  • Governmental workers: 10.8% (1,112 residents)
  • Not-for-profit companies: 8.5% (874 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025