What are the U.S. Ski & Snowboard age classifications?

The age classifications for the 2020-21 ski season are as follows:

Age ClassAges as of 12/31/20Birth Year
U87 and younger2013 and later
U108 and 92011 or 2012
U1210 and 112009 or 2010
U1412 and 132007 or 2008
U1614 and 152005 or 2006
U1916 - 182002, 2003 or 2004
U2119 and 202000 or 2001
SR21 and older1999 or earlier