The Amateur Athletic Union was established in 1888
Players looking to join an AAU team, must attend a teams try-out or have their parents register them as a free agent. To find an AAU team near you, click here.
You also need to resister the athlete as a member of AAU. Eastern PA, Delaware, and South New Jersey all fall under the 8th district of AAU. You can become a member through this link.
AAU breaks up leagues by age group using the abbreviation u for under (ex. 8u as league for players who are 8 years old or younger, by the cutoff date) Find the age calculator for your child here