During the 20th century, many residents emigrated from Patrica to Aliquippa, Pennsylvania, in the United States, to work in the steel mills; J&L in Aliquippa. They also emigrated to Ambridge which is just across the Ohio River from Aliquippa to work in the mills in and around Ambridge as well as at J&L; American Bridge, Wycoff, A.M. Byers, Bethlehem Steel, etc. The Italian community there continues to celebrate each August the Feast of San Rocco, patron saint of Patrica.[1]