Cities (Illinois)  | Churches (132) |
| Addison | St. Joseph (English, Spanish)  |
| Addison | St. Philip the Apostle  |
| Ashkum | Assumption of the Blessed Virgin Mary  |
| Aurora | Our Lady of Mercy  |
| Beaverville | St. Mary  |
| Bensenville | St. Alexis (English, Spanish)  |
| Bensenville | St. Charles Borromeo  |
| Bloomingdale | St. Isidore (English, Spanish)  |
| Bolingbrook | St. Dominic (English, Spanish)  |
| Bolingbrook | St. Francis of Assisi  |
| Bourbonnais | Maternity of the Blessed Virgin Mary  |
| Bradley | St. Joseph  |
| Braidwood | Immaculate Conception  |
| Cabery | St. Joseph  |
| Carol Stream | Corpus Christi  |
| Carol Stream | St. Luke  |
| Channahon | St. Ann  |
| Chebanse | Sts. Mary and Joseph  |
| Clarendon Hills | Notre Dame  |
| Clifton | St. Peter  |
| Coal City | Assumption of the Blessed Virgin Mary  |
| Crescent City | St. Joseph  |
| Crest Hill | St. Ambrose  |
| Crest Hill | St. Anne  |
| Darien | Our Lady of Korean Martyrs (Korean)  |
| Darien | Our Lady of Mount Carmel  |
| Darien | Our Lady of Peace  |
| Darien | St. Therese (National Shrine)  |
| Downers Grove | Divine Savior (English, Spanish)  |
| Downers Grove | St. Joseph  |
| Downers Grove | St. Mary of Gostyn  |
| Elmhurst | Immaculate Conception  |
| Elmhurst | Mary Queen of Heaven  |
| Elmhurst | Visitation  |
| Essex | St. Lawrence O’Toole  |
| Frankfort | St. Anthony  |
| Gibson City | Our Lady of Lourdes  |
| Gilman | Immaculate Conception  |
| Glen Ellyn | Queenship of Mary (Vietnamese)  |
| Glen Ellyn | St. James the Apostle  |
| Glen Ellyn | St. Petronille  |
| Glendale Heights | St. Matthew  |
| Goodrich | Sacred Heart  |
| Herscher | St. Margaret Mary  |
| Hinsdale | St. Isaac Jogues  |
| Homer Glen | Our Mother of Good Counsel  |
| Homer Glen | St. Bernard  |
| Hopkins Park | Sacred Heart  |
| Irwin | St. James the Apostle  |
| Itasca | St. Andrew Kim (Korean)  |
| Itasca | St. Peter the Apostle  |
| Joliet | St. Raymond Nonnatus (Cathedral)  |
| Joliet | St. Raymond Nonnatus  |
| Joliet | Holy Cross  |
| Joliet | Our Lady of Mount Carmel  |
| Joliet | Sacred Heart  |
| Joliet | St. Anthony  |
| Joliet | St. Bernard  |
| Joliet | St. Francis Xavier  |
| Joliet | St. John the Baptist  |
| Joliet | St. Joseph (English, Slovenian)  |
| Joliet | St. Jude  |
| Joliet | St. Mary Magdalene  |
| Joliet | St. Mary Nativity (English, Croatian)  |
| Joliet | St. Patrick (English, Spanish)  |
| Joliet | St. Paul the Apostle  |
| Kankakee | St. Martin of Tours  |
| Kankakee | St. Patrick  |
| Kankakee | St. Rose of Lima (English, Spanish)  |
| Kankakee | St. Teresa  |
| Kinsman | Sacred Heart  |
| L’Erable | St. John the Baptist  |
| Lisle | St. Joan of Arc  |
| Lisle | St. Procopius (Monastery)  |
| Lockport | St. Dennis  |
| Lockport | St. John Vianney (English, Polish)  |
| Lockport | St. Joseph  |
| Loda | St. Joseph  |
| Lombard | Christ the King  |
| Lombard | Divine Mercy (English, Polish)  |
| Lombard | Mary Immaculate, Queen of Universe (National Shrine)  St. Pius X Church |
| Lombard | Sacred Heart  |
| Manhattan | St. Joseph  |
| Manteno | St. Joseph  |
| Martinton | St. Martin  |
| Minooka | St. Mary  |
| Mokena | St. Mary  |
| Momence | St. Patrick  |
| Monee | St. Boniface  |
| Morris | Immaculate Conception  |
| Naperville | Holy Spirit  |
| Naperville | St. Elizabeth Seton  |
| Naperville | St. Margaret Mary  |
| Naperville | Sts. Peter and Paul (English, Latin)  |
| Naperville | St. Raphael  |
| Naperville | St. Thomas the Apostle  |
| New Lenox | St. Jude  |
| Oakbrook Terrace | Ascension of Our Lord  |
| Oswego | St. Anne  |
| Park Forest | St. Mary  |
| Paxton | St. Mary  |
| Peotone | St. Paul the Apostle  |
| Piper City | St. Peter  |
| Plainfield | St. Mary Immaculate  |
| Plano | St. Mary  |
| Reddick | St. Mary  |
| Roberts | Immaculate Conception  |
| Rockdale | St. Joseph (Latin, English)  |
| Romeoville | St. Andrew the Apostle (English, Spanish, Polish)  |
| Roselle | St. Walter  |
| St. Anne | Our Lady of Fatima (Shrine)  Church of St. Anne |
| St. George | St. George  |
| Shorewood | Holy Family  |
| South Wilmington | St. Lawrence  |
| Steger | St. Liborius  |
| Villa Park | St. Alexander  |
| Villa Park | St. John the Apostle  |
| Warrenville | St. Irene  |
| Watseka | St. Edmund  |
| Wayne | Resurrection  |
| West Chicago | St. Mary (English, Spanish)  |
| Westmont | Holy Trinity  |
| Wheaton | St. Daniel the Prophet  |
| Wheaton | St. Mark  |
| Wheaton | St. Michael  |
| Wilmington | St. Rose  |
| Wilton Center | St. Patrick  |
| Winfield | St. John the Baptist  |
| Wood Dale | Holy Ghost  |
| Woodridge | Christ the Servant  |
| Woodridge | St. Scholastica  |
| Yorkville | St. Patrick  |
Cities  | Other Churches Within the Diocesan Territory (2) |
| Homer Glen | Annunciation (Ruthenian)  |
| Lombard | Our Lady of Lebanon (Maronite)  |