Decatur, AL Metropolitan Statistical Area AL Demographic Data and Boundary Map


Decatur, AL Metropolitan Statistical Area Boundary Map

Decatur, AL Metropolitan Statistical Area Data & Demographics (As of July 1, 2020)


Total Population 155,995 (100%)
Population in Households 153,768 (98.6%)
Population in Families 128,942 (82.7%)
Population in Group Quarters1 2,227 ( 1.4%)
Population Density 123
Diversity Index2 47


Median Household Income $51,543
Average Household Income $67,448
% of Income for Mortgage4 11%
Per Capita Income $26,548
Wealth Index5 67


Total HU (Housing Units) 68,184 (100%)
Owner Occupied HU 44,819 (65.7%)
Renter Occupied HU 16,529 (24.2%)
Vacant Housing Units 6,836 (10.0%)
Median Home Value $139,615
Average Home Value $166,619
Housing Affordability Index3 227


Total Households 61,348
Average Household Size 2.51
Family Households 42,828
Average Family Size 3
  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.


2010-2020 2020-2025
Population 0.14% 0.14%
Households 0.11% 0.11%
Families -0.07% -0.04%
Median Household Income   1.09%
Per Capita Income   1.74%
Owner Occupied HU   0.07%