Jefferson County Junior Baseball has provided a quality baseball experience for the youth of Arvada since it's inception in 1945. There are currently sixteen member areas participating in the JCJBL, including all of Jefferson County as well as Louisville, North Boulder, Broomfield, Brighton, Englewood, and South Metro. The Arvada area is represented by the North Jefferson Junior Baseball Association (NJJBA). Teams are sanctioned nationally which provides the opportunity for post season tournament play.