Starting in 2016, U.S. Soccer mandated that birth-year registration calendars will align with the start of the calendar year and run from January to December, rather than August to July as it had previously. Please view the new age matrix below to see what age group your player will be participate in. Players may play up one age group by request, however, no players will be able to play down to a younger age group. There is no exceptions to this rule for safety and development reasons.

For more information on the birth-year registration mandate please see the links below.
New U.S. Soccer Coaching Initiatives Target Improvement In Youth Development Standards
U.S. Youth Soccer's Birth-Year Registration FAQ