In the late 19th and early 20th century a significant number of young people left Casalattico to work in Ireland, with many founding chip shops there. Up to 8,000 Irish-Italians have ancestors from Casalattico and nearby Picinisco and other local towns like Casalvieri and Atina, La Macchia, San Donato, Settefrati and a collection of smaller towns and commune. Immigration to France and England along with America and Canada also popular destinations for the immigrants.