St. Catherine of Siena Catholic Church is located at 845 W. Main St. in West Dundee. St. Mary Church is located at Matteson Street and Galligan Road in Gilberts.

St. Catherine of Siena merged with St. Lucy Parish of the Austin neighborhood in 1974. In 2022, the parish joined St. Giles Parish as part of the Archdiocese of Chicago’s Renew My Church initiative.