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





SMI Offers $1,000 off to Transfer Students

St. Mary’s is pleased to offer a Tuition Transfer Grant to any parishioner who transfers their child into Grades K-7 from any private*, public, charter or home school. This grant will be applied to offset the current school tuition. St. Mary’s rigorous curriculum exceeds state and diocesan standards and our students consistently perform in the top of their high school classes.

Our new state of the art STEM lab and 1:1 program sets our school apart...READ MORE


Solemnity of the Assumption Schedule

Holy Day of Obligation
We commemorate the Assumption of the Blessed Virgin Mary, the physical elevation of her sinless soul & incorrupt body into Heaven.

Monday, August 14
Vigil Mass  
7:00 pm  Church

Tuesday, August 15
  7:30 am  Church
English  12 Noon  Church
 Rosary  6:15 pm  Church
English  7:00 pm  Church   
   Spanish  7:00 pm  Cana     
 Polish  8:30 pm  Cana

Protecting God's
Children Workshops

Out of concern for the safety and well-being of children, every diocesan, parish, school or RE employee or volunteer who is involved with minors on a regular basis and those who may have an opportunity to be alone with children during parish, school or RE sponsored events, are required to attend a Virtus Protecting God’s Children program.

We have scheduled Protecting God’s Children Workshops for the following dates:
Wed., August...READ MORE 


Helping Hearts and Hands

Have you ever thought of volunteering your time but are afraid to because the commitment might be more that you want? Well here is your opportunity to get your hands dirty one day a month for two or three hours. Helping Hearts and Hands is a group of St Mary’s parishioners that help primarily our senior population or anyone that needs help accomplishing household tasks. These tasks include mowing, trimming, raking, weeding, mulching, painting, power washing, window washing and light duty household repairs. Many projects can be family friendly. Interested? Contact Paul King at 815-735-2911 or paul@northweststeel.com.   

Register Today for SMI School

St. Mary Immaculate Parish School registration for the 2017-2018 school year is now open.  As a school, we are proud of the high quality educational experience, staff, and faith based education that we provide.  Not only is our curriculum challenging, and staff progressive, but the St. Mary's community is an incredible group to get involved and active with. We provide an Outstanding Catholic Education in both faith and academics for students age 3-8th grade.  Our early childhood programs (Pre-School and Pre-Kindergarten) have both a full-day and half-day option.  Free bus service is available for those who live in the Plainfield District 202 boundaries...LEARN MORE


Catholic Ministries Annual Appeal - Help Us Reach Our Goal

If you have not made your contribution to the 2017 Catholic Ministries Annual Appeal, please consider doing so. Our amount pledged is $223,154 with $145,166 having been paid. You can participate by going online at jolietdioceseappeal.org, or by mailing in your gift. After our parish exceeds its CMAA goal of $226,217 in paid pledges, 70% of any additional funds are returned for use in our parish. One pledge can make a difference, especially when combined with all of the other pledges made throughout the Diocese. Please prayerfully consider providing your financial support to this year’s Appeal, “Held in God’s Hands.” You can make a real difference!

















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)

(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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