After the medal ceremony held later that evening for the 10 km individual large hill event, Demong proposed to his girlfriend, Katie Koczynski, in front of teammates and coaches at the team headquarters near Vancouver. Koczynski said yes. Also on that same day, Demong found out he was named the flagbearer for the American team at the closing ceremony of the 2010 Winter Olympics on February 28. It was Demong's teammate, Spillane, who gave Demong the courage to propose to his future wife. Demong and his fiancée discussed how this happened on NBC's "Today" show the following morning. On July 11, 2010, Demong married Koczynski in Lake Placid, New York.