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 





Christmas Concert


St. Mary Immaculate's annual Christmas Concert:  A Journey to the North Star, will take place on Friday, December 14th at 7:30 pm.  Come join us for a performance by St. Mary Immaculate's Symphonic Choir and the Angels of Praise Dancers, as they are accompanied with an orchestra and narration.

Tickets are $10 and can be purchased at St. Mary Immaculate, the day of the event, or by clicking here and purchasing tickets online.  We hope to see you there!  


Christmas Eve/Day Mass Schedule

We hope you can join us for Mass this Christmas!  See our Advent page for details.

Christmas Eve:
2:00 pm Special Needs in Cana 
3:30 pm in Church 
3:30 at Ira Jones School 
3:45 pm in SMI Gym 
3:45 pm at Central Elementary, 
6:00 pm in Church 
8:30 pm Polish in Church
 10:30 pm in Church

Christmas Day:
7:30 am in Church 
9:00 am in Church 
9:00 am Polish in Cana 
10:45 am in Church 
12:15 pm in Church 
12:15 pm Spanish in SMI Gym   

Financial Peace University 

Financial Peace University is a program that is being offered at St. Mary Immaculate beginning January 17th.  For more than 20 years, Financial Peace University has been a resource for thousands of parishes across the country, as they have shown over 4.5 million people how to beat debt, while still giving generously.  

Check out St. Mary Immaculates' Financial Peace group here, along with more information about the program and when it is running at St. Mary Immaculate.   


Our Lady of Guadalupe Novena

Beginning on Monday, December 3rd, our Hispanic Ministry will be leading a novena leading up to the Feast of Our Lady of Guadalupe Mass on Wednesday, December 12th at 6:30 pm in the Church.  The novena prayers will take place in Faith Sharing/Harvester Rooms.  Please consult our Advent Resource page (at the top of the homepage) for details on the start time.


Simbang Gabi

On Tuesday, December 18th, St. Mary Immaculate will be hosting a Simbang Gabi Mass.  Simbang Gabi is a Filipino tradition, where there are several nights of Masses leading up to Christmas.  This Mass will be partially in Tagalog, but will be presided by Fr. Pat Mulcahy.  See the flyer in the Commons for more details.  


Radiance: High School Girls Group

Our high school girls group, Radiance, will be continuing their series on the Theology of the Body on Wednesday, December 19th.  Meetings for Radiance are on Wednesdays at 6:30 pm in the Youth Room.   
















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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