Rincon Valley Little League was formed in 1959 with fewer than 100 kids playing on two fields behind the Montecito Shopping Center. The land was (and still may be) owned by Ernie Thomas. RVLL is a California 501c Non-Profit organization and is chartered by Little League International. RVLL moved to its current location, owned by Sonoma County Water Agency in the mid 1960s. At which time there were over 500 players. Today, RVLL has more than 800 players with five fields of play from Tee Ball division through Senior Division.