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 city is home to the U.S. Army Aviation and Missile Command and NASA's Marshall Space Flight Center, which is located at the nearby Redstone Arsenal. Huntsville is also the location of Alabama A&M University, Oakwood University, University of Alabama in Huntsville and the J.F. Drake State Technical College.