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





Protecting God's Children Workshops

We have scheduled Protecting God’s Children Workshops for the following dates:
Monday, Aug. 29 7pm–10pm Faith Sharing Room
Wed., Sept. 7 7pm–10pm Stewardship/Unity Rooms Tues., Sept. 20 7pm–10pm Faith Sharing Room
Mon., Oct. 3 9:30a–12:30p
Stewardship/Unity Rooms Wed., Oct. 19 7pm–10pm Stewardship/Unity Rooms 

 Please call the Religious Education Office at
815-436-4501 to register.


FIAT Young Adult

Wednesday, August 24
6:45 - 9:00 pm

SMI's NEW Young Adult Group FIAT invites all Young Adults ages 18-35 to join them for a Sushi Night at St. Marys. We will meet at St. Mary Immaculate in the Faith Sharing Room across from Cana Hall at 6:45 pm. We'll be learning how to make our own sushi! Just bring yourself and a friend. We'll provide the supplies. Don't like sushi? No problem! We'll have other food on hand. Please RSVP HERE.

RE Class Listings
Now Available

Click HERE to View List

Classes begin the week of Monday, September 5th. If your name does not appear on the list, we still may need documentation from you. Please call the RE Office at 815-436-4501 for details.

Any class change requests must be made to the RE Office by Monday, August 29th and will only be made it space is available.

Click HERE to View List




RE Catechists and Confirmation Mentors Needed

Join our program and immerse yourself deeper in your own faith life as you guide children and teens on their journey of discovering Jesus in the fullness of our Catholic faith. Lesson plans & training are provided. For more details or to sign up please call the St. Mary Immaculate Religious Education and Confirmation Office at 815-436-4501.

Joliet Junior College ESL Classes at SMI - Fall Semester begins Aug. 22

English as a Second Language classes at St. Mary’s will be starting again in August. Classes will be at St. Mary’s on Mondays and Wednesdays from 6 to 8:45 p.m. starting on August 22. All students must attend a 3 hour orientation event. This will be held at St. Mary’s on the first night beginning at 5:00 p.m. (NOTE: different starting time for this first night). To register for this please call (815) 280-1333 (a Spanish speaker is available) or register on-line by going to www.jjc.edu/info/dafs and click on Register Now. At the orientation you will be asked to fill out enrollment forms and take a placement test. Please arrive on time and please do not bring children. We look forward to seeing you!

Back to School Blessings at Weekend Masses

Back to School Blessings at Weekend Masses There will be Back to School Blessings during all of the weekend Masses on August 13/14 and 20/21. August 13 and 14, there will be a Blessing of all students entering or returning to college this fall. August 20 and 21, there will be a special Blessing of all students and teachers.

Annual Golf Outing Save the Date Friday, September 30

Join us for the 19th Annual St Mary Immaculate Parish Golf Outing at the Bolingbrook Golf Club on Friday, September 30th. The outing includes lunch, golf, cocktails, dinner, raffles & prizes. All proceeds raised at this event benefit an educational fund for the wonderful teachers at St. Mary Immaculate Parish School. For more information on the event and sponsorship opportunities, please visit http://smigolf.org/.
















Masses 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)

4:00-5:15 pm (North Wing Room A)

(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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