Mountain Brook, AL Profile: Facts & Data


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Mountain Brook, Alabama - Basic Facts

The City of Mountain Brook had a population of 22,296 as of July 1, 2023. Mountain Brook ranks in the upper quartile for Population Density and the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Alabama. See peer rankings below.

The primary coordinate point for Mountain Brook is located at latitude 33.5009 and longitude -86.7522 in Jefferson County. The formal boundaries for the City of Mountain Brook encompass a land area of 12.83 sq. miles and a water area of 0.02 sq. miles. Jefferson County is in the Central time zone (GMT -6).

The City of Mountain Brook has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Alabama is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Mountain Brook is located within Birmingham Division of Jefferson County.

Jump to... (On This Page!)
  1. Mountain Brook 2023 Demographic Data
  2. Growth Rates for Mountain Brook (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Alabama Research Tools (Easy Tools & Current Data)
  3. Alabama Data Comparison Tool - 2023 Demographics

Mountain Brook, AL Data & Demographics (As of July 1, 2023)


Total Population 22,296 (100%)
Population in Households 22,228 (99.7%)
Population in Families 19,811 (88.9%)
Population in Group Quarters1 68 ( 0.3%)
Population Density 1,736
Diversity Index2 19


Median Household Income $146,672
Average Household Income $237,706
% of Income for Mortgage4 25%
Per Capita Income $86,639
Wealth Index5 295
Socioeconomic Status Index6 High (71.4)


Total HU (Housing Units) 8,449 (100%)
Owner Occupied HU 6,606 (78.2%)
Renter Occupied HU 1,520 (18.0%)
Vacant Housing Units 323 ( 3.8%)
Median Home Value $612,407
Average Home Value $713,109
Housing Affordability Index3 98


Total Households 8,126
Average Household Size 2.74
Family Households 6,140
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.


2020-2023 2023-2028
Population -0.26% -0.16%
Households -0.15% -0.09%
Families   -0.09%
Median Household Income   2.50%
Per Capita Income   2.18%
Owner Occupied HU   -0.15%

Mountain Brook, AL - Peer Comparisons by Rank and Percentile

The table below compares Mountain Brook to the other 593 incorporated cities, towns and CDPs in Alabama by rank and percentile using July 1, 2023 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 29 95th
Population Density # 15 98th
Median Household Income # 2 100th
Housing Affordability Index # 103 17th
Per Capita Income # 1 100th
Diversity Index # 535 10th

Additional comparisons and rankings can be made with a VERY EASY TO USE Alabama Census Data Comparison Tool.

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