Butera is an Italian town and a commune in the province of Caltanissetta, in the southern part of the island of Sicily. It is bounded by the comun…Butera is an Italian town and a commune in the province of Caltanissetta, in the southern part of the island of Sicily. It is bounded by the comuni of Gela, Licata, Mazzarino, Ravanusa and Riesi. It has a population of 4,653 and is 49 km from Caltanissetta, the province's capital.