Resident Population of Municipalities by County 1980, 1990 & 2000.
Driving distance from Huntsville, AL to Decatur, AL. The total driving distance from Huntsville, AL to Decatur, AL is 26 miles or 42 kilometers. Your trip begins in Huntsville, Alabama. It ends in Decatur, Alabama.
Decatur is a city in Morgan and Limestone counties in the State of Alabama. The city, affectionately known as The River City, is located in Northern Alabama on the banks of Wheeler Lake, along the Tennessee River. It is the largest city and county seat of Morgan County. The population in 2010 census was 55,683.