Welcome to

St. Mary Immaculate Parish

A Roman Catholic Parish in the Diocese of Joliet

15629 S. Rt. 59, Plainfield, IL 60544     815.436.2651

Office Hours:  M-Th: 8:15 am-4:15 pm, F: 8:15 am-1:00 pm
Receptionist Available:  During Weekend Masses and Evening Events
See Calendar for Evening Building Closures 


Our Ash Wednesday Schedule is changing!  Click below for details!





School Open House

St. Mary Immaculate School will be having an Open House on Monday, February 18th from 9:00 - 11:00 am.  This open house is available for anyone interested in registering for the upcoming school year.  For more details, please visit the school's website at smischool.org,
or call the office at 815-436-3953.     



Year of the Eucharist

The Year of the Eucharist will be picking up where it left off before Christmas with some new events and opportunities to grow closer in relationship with Jesus through the Eucharist.


Seder Meal: 
March 2nd at 5:30 pm
in Cana Hall.  Sign up here

RSVP by Feb. 27th to Geri Morse at gmorse@smip.org

Eucharistic Miracles Display: March 9th & 10th


Catholic Man Night 

Catholic Man Night, a diocese-wide event for all men of the Diocese of Joliet, will take place on Tuesday, February 19th at 6:30 pm at St. Mary Immaculate Parish.

Come join our pastor, Fr. Pat Mulcahy, and Fr. Burke Masters for a night of fellowship, adoration, confession, and a man-feast.  This event is supported by the Fisher's of Men group here at the parish.


Chat with Fr. Pat

Join us on Saturday, February 16th at 9:30 am for our monthly Chat with Fr. Pat event.  This is an opportunity for Fr. Pat to get to know and hear from our parishioners!  You can sign up at smip.org/chat or call Pam Angelus at 815-436-2651 x849. 


Wild Goose

The Wild Goose, a small group and video discussion series, begins on Sunday, February 17th at 10:30 am in Stewardship/Unity Room.  This series is for adults looking to discover a deeper relationship with the Holy Spirit.  To register for this series, please click here.  


Upcoming Special Masses

Our monthly Special Needs Mass will take place on Sunday, February 10th at 10:30 am in Cana Hall.  This Mass takes place on the second Sunday of every month.  On Sunday, Febraury 17th at the 10:45 am Mass, we will have our Family Mass, which is led by students from the Religious Ed program and the school.  
















Mass Times

4:00 pm
7:30 am
9:00 am
10:45 am
12:15 pm
6:00 pm (Contemporary Mass)

5:30 pm (Church)
12:15 pm (Cana Hall)

9:00 am (Cana Hall)


7:30 am


3:00-4:00 pm (Church)

(Or by appointment with the priests. To make an appointment contact the Parish Office at 815.436.2651)



Continuous exposition of the Most Blessed Sacrament from Sunday 7:00 pm through Friday 9:00 pm except on First Fridays when exposition continues overnight to Saturday 7:00 am.







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