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Masses Times

4:00 pm
7:30 am
9:00 am
9:01 am (Cana Hall)
10:45 am

12:15 pm
6:00 pm (Contemporary Mass)

5:30 pm (Church)
12:15 pm (Cana Hall)

10:30 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.




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





Enroll Today for SMI Parish School!

Register for the Fall Today!

We are still enrolling for the 2015-2016 school year. We offer a quality faith-centered education for children from Pre-School (age 3 by September 1, 2015) to Grade Eight and have openings in K thru 5 and 7th grade.  In order to register for our school or to be placed on the waiting list (PS/PK and 6th grade), we require that families be registered parishioners at St. Mary Immaculate. We also ask that you bring your child’s birth certificate and a Catholic baptismal certificate along with a $125 registration fee per family with you when you register. The first tuition payment for the fall is also due at this time. For more info, please visit our website at smischool.org or contact the school office at 815-436-3953. Thank you for your interest in St. Mary Immaculate Parish School. 

Join us for Bibles, Blankets, & BBQ!

Life Teen High School
Bible Study
Mon., July 27 - Fri., July 31
from 6-8 pm

All High School Teens are invited to join SMI Life Teen High School Ministry for an awesome week long Teen Bible Study! Bring a blanket and meet us at the hill on the northside of the building by the Adoration Chapel.

Every night we will have great food and fellowship. Fr. David with be leading us in a Bible Study of the Gospel of Mark. Bring a friend and join us for Bibles, Blankets, and BBQ!

Have any questions? Contact Ruth Campbell at 815-436-2651 ext. 877 or RCampbell@smip.org.

Click HERE to view/download a permission form.



Totus Tuus is
Coming to SMI



July 19-24, 2015

Totus Tuus is a diocesan summer youth program for where seminarians and college students visit a parish for a week of proclaiming the Gospel through teachings, Mass, games, Confession, fun, personal witness stories, skits and more!

Entering Grades 1-6
Monday - Friday (July 20-24) 9:00 a.m. - 2:30 p.m.
Cost is $25 per child
Family Rate: $50 for 3 or more for children in Grades 1-6

Entering Grades 7-12
Sunday - Thurs. (July 19-23)
7:00 p.m. - 9:00 p.m.
Cost is $10 per teen  

For more info, please contact
Ruth Campbell at Rcampbell@smip.org or call 815-436-2651 ext. 877.

Click HERE to View/Download 
Registration Forms.


Young Church Lock-In! Catholicism for Middle Schoolers - Fri, July 31

All teens going into 6th, 7th, and 8th grades are invited to participate in Young Church, a new and exciting ministry for middle school students! Join us for our epic summer lock-in, Middle School Mayhem, Friday, July 31 – Saturday, August 1, 7pm-11am. Have any questions? 
Contact Ryan Essington, SMI Youth Outreach Coordinator at 815-436-2651 ext. 814 or ressington@smip.org for more details! Click HERE to download a permission form.


Catholic Ministries Annual Appeal 2015

Thank you to all the 974 families who have made a pledge to the Catholic Ministries Annual Appeal. Acknowledgement letters from the Diocese should arrive within the next week or two. Thank you also to those of you continuing to make your monthly pledge payments. If you have not yet made a pledge, please prayerfully consider how you might support the good works of our Bishop and our Diocese and send in your pledge this week. Pledge envelopes...READ MORE


Mark your Calendars - St. Mary Immaculate is Hosting a Carnival!

St. Mary Immaculate’s first-ever Carnival will be held August 26-29, 2015, right here on our parish grounds. We have contracted with All Around Amusement, Inc., a local company from Lockport, to provide a four-day Carnival for our parishioners and the local community. Details will follow in the weeks prior to the Carnival. In the meantime, please mark your calendars and plan to join us for what promises to be a fun-filled end-of-summer event here at our parish!

New Polish Mass Time

Until further notice, with the help of visiting priests, our Polish Mass will now be held at 9:00 a.m. in Cana Hall. This change comes as a result of us losing our beloved Fr. Stan. We would like to wish Fr. Stan good luck and many blessings at his new assignment!