The population of the town was 4,081 inhabitants, according to the 2001 census.
Vonitsa is built on the site of ancient Anaktorion - a Corinthian colony that dated back to 630 BC. The area first became known under its present name in Byzantine times. Like most of Greece, Vonitsa fell to the Turks. It was temporarily held by the Venetians between 1684 and 1797 and was finally liberated, in 1829, by Antonios Kriezis during the Greek War of Independence.