Hi, Mary —

There are a few such sites. One that lists dioceses is the official United States Conference of Catholic Bishops site (USCCB).

• Directory of U.S. Bishops and Dioceses

For Mass times and locations try:

• Ordo/Novus Ordo Masses (Masstimes.org), or
• Latin Mass Directory for the United States and Canada

Another good site is Catholic-Hierarchy.

• Catholic Hierarchy — Search down by Country
• Catholic Hierarchy — Diocesan Search

Using the two web pages above I found the Church you were looking for in Illinois is in:

• National Region: VII and
• In the Diocese of Peoria
  
  
• St. Joseph Catholic Church
  

Side note: If you struggle with sins of the flesh, you might also try this browser:

• Pure Browser

Best wishes —

Eric and Mike