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.
The Huntsville-Decatur-Albertville, AL Combined Statistical Area is the most populated sub-region of North Alabama, and is the second fastest growing region in the State of Alabama, with 735,550 living within the CSA. It is also currently the 64th largest CSA in the country.