Welcome to St. Irenaeus Parish website!  We are located in Oakmont, Pennsylvania, which is 15 miles northeast of Pittsburgh by the Allegheny River.   We hope that you can discover and learn what is happening here at our parish.

Please use the menu options to navigate through the various activities that encourage our parishioners to share and grow in our Catholic faith.  We welcome new members!

Mass Times

Saturday:  4:30pm      

Sunday:  8:00am, 11:00am

Tuesday - Thursday:  8:00am

Holy Days of Obligation:  10:00am, 7:00pm

Confessions:  Saturdays, 11:00am - 12:00pm

Breakfast with St. Nicholas

Click on the photo below to enlarge it


Bible Search

Advanced search

Parish Office Hours at School Building

Front entrance on 637 4th Street:

Monday - Friday:  8:30 am - 3:30 pm

Flea Market

St. Irenaeus Fall / Holiday Flea Market is open until Saturday, Dec. 9th. in the PLEC Bldg at 619 4th Street.

All autumn and holiday items will be available including Clothing, Jewelry, Furniture, Household Goods and much more!  Come visit us for great bargains.

Our hours will be:  Tuesday:  10AM - 4PM

                                Thursday:  10AM - 5PM

                                 Saturday:   9AM - 2PM

Bible Study: Prophets

Wednesdays at 6:30pm (except Nov. 1) until Nov. 15

Online Giving

Online Giving

Online Giving:  Faith Direct