Population density (sq mi)1,0259791
Median age38.638.637.7
Male/Female ratio0.9:10.9:11.0:1
Married (15yrs & older)57%57%55%
Families w/ Kids under 1846%40%43%
Speak English88%95%79%
Speak Spanish11%3%13%

Key findings

  • The population density in Decatur is 956% higher than Alabama
  • The median age in Decatur is equal to Alabama
  • In Decatur 70.54% of the population is White
  • In Decatur 21.52% of the population is Black
  • In Decatur 0.63% of the population is Asian

Compare Decatur, AL Demographics


      Decatur population breakdown by race

      American Indian0.78%0.49%0.82%
      Native Hawaiian0.00%0.04%0.18%
      Mixed race3.13%1.76%3.06%
      Other race3.40%1.28%4.75%
      In Decatur, 12.7% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Decatur age breakdown

      Marital status

      Age of children in married couples

      Source: The Decatur, AL demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).