First called Hamiltonburg, the name was changed to suit its location near the confluence of the Atascosa, Nueces and Frio rivers. It is a commercial center for ranching, hunting and fishing, and oil and gas production. Tips Park offers 31-acres with camping, fishing and picnic areas one mine west of Three rivers off Texas 72 on the Frio River.

Events include the Choke Canyon Birding Festival the first weekend in February and the Three Rivers Salsa Festival the first Saturday in April.