Decatur, AL Profile: Facts & Data


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Decatur, Alabama - Basic Facts

The City of Decatur had a population of 55,414 as of July 1, 2018. Decatur ranks in the upper quartile for Population Density and 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 Decatur is located at latitude 34.6059 and longitude -86.9833 in Morgan County. The formal boundaries for the City of Decatur encompass a land area of 54.11 sq. miles and a water area of 6.79 sq. miles. Morgan County is in the Central time zone (GMT -6). The elevation is 561 feet.

While the primary coordinates for City of Decatur are located in Morgan County, it should be noted that the formal boundaries for this community also extend into and Limestone County.

The City of Decatur (GNIS ID: 2404206) 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 Decatur is located within Decatur Division of Morgan County.

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  1. Decatur 2018 Demographic Data
  2. Growth Rates for Decatur (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 - 2018 Demographics

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Decatur, AL Data & Demographics (As of July 1, 2018)


Total Population 55,414
Population in Households 54,082
Population in Familes 43,432
Population in Group Qrtrs 1,332
Population Density2 1,024
Diversity Index3 65


Median Household Income $45,381
Average Household Income $62,938
Per Capita Income $25,704


Total Housing Units 24,834 (100%)
Owner Occupied HU 14,675 (59.1%)
Renter Occupied HU 7,602 (30.6%)
Vacant Housing Units 2,557 (10.3%)
Median Home Value $132,708
Average Home Value $164,881


Total Households 22,277
Average Household Size 2.43
Family Households 14,375
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2018 2018-2023
Population -0.05% -0.14%
Households -0.15% -0.19%
Families -0.43% -0.34%
Median Household Income   2.71%
Per Capita Income   2.36%

Decatur, AL - Peer Comparisons by Rank and Percentile

The table below compares Decatur to the other 580 incorporated cities, towns and CDPs in Alabama by rank and percentile using July 1, 2018 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 # 9 99th
Population Density # 42 93rd
Diversity Index # 8 99th
Median Household Income # 188 68th
Per Capita Income # 124 79th

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

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