1978 the parish was established due to the steady growth in Hamilton County
1980 the church was built with an initial membership of 160 families
1988 Craig Willy Hall was built to provide 4,000 square feet of social gathering space for the parish
1993 parishioner, John Burkhard, donated the belltower in memory of his wife, Berly
1994 the Youth Ministry Center was completed to provide 10,000 square feet of classroom and assembly space
1995 the Perpetual Adoration Chapel, founded by Fr. Donald Eder, opened
1999 the dream of a parochial school became a reality at the groundbreaking on August 15
2000 St. Louis de Montfort School began its inaugural year on August 17th, as a ministry of the parish, with students grades kindergarten through sixth
2003 the parish Silver Jubilee saw the opening of the food pantry
2008 a memorial garden was established as well as a prayer labyrinth*
2009 the Faith Community of St. Louis de Montfort was recognized as a "Stewardship Parish of Distinction" by the Diocese of Lafayette.
2010 the Sanctuary was renovated to enhance the worship experience
2010 a new playground was constructed*
2011 a new altar was designed and built by then Associate Pastor, Fr. John Kiefer, and parishioner, Steve Grusak*
2011 on April 7th the new altar was dedicated by Bishop Timothy Doherty
2011 new liturgical furnishings were added, including: ambo, chair, ambry, sacramental oil glass vessels, processional candles and altar candle sticks*
2011 St. Louis de Montfort Catholic School was named "Business of the Year" by the Fishers Chamber of Commerce
2012 St. Louis de Montfort Catholic School earned an "A" letter grade from the Indiana Department of Education
2012 the Ministry Center was renovated and updated*
2013 St. Louis de Montfort Catholic School was recognized as a 2012-2013 Indiana Four Star School by the Indiana Department of Education
2013 St. Louis de Montfort Catholic School was honored as a 2013 National Blue Ribbon School
* Made possible by the generosity of parishioners and parents through the Fund-a-Project during Mardi de Montfort Annual Dinner and Auction Gala