The country star, 38, tied the knot with Kerr, 27, on Saturday, a year after taking their relationship public, reported People magazine.
They were first linked in 2012, when the musician was photographed getting cozy with Kerr.
He filed for divorce from his wife of 12 years, Jessica Ussery, in April 2013 and popped to question to Kerr in September 2014.
This is the first marriage for Kerr. Aldean has two daughters with Ussery: Keeley, 12, and Kendyl, 7.