The Catholic Women's Club of the parish meets on the second Tuesday of the month from September through May. Evening Mass if offered for their intentions and the meeting follows. Projects undertaken by our CWC have enabled the renovating of the parish rectory living room and kitchen with new carpeting, furniture, decorative wall covering and window treatment. The club has also purchased a new Nativity Set for our indoor Christmas decorating. Bus trips to "Veronica's Veil" Passion Play, Christmas Parties, and Card Party Fundraisers all contribute to the fun and good fellowship enjoyed by members.

The Knights of Columbus Council #4437 meet on the 3rd Sunday of the month in the church meeting room. Attending are Council members from Adena, Harrisville, Cadiz and Colerain areas.

Our Scripture -Sharing Group normally meets on Wednesday mornings at 11:00 am from September through May. Led by Sister Jeanne Vucic, discussion os held concerning the following Sunday's readings.

The St Monica Support Group is an organization open to all widows and widowers of the parish. An informative video presentation is given and light refreshments are served. Members are free to share their accomplishments as well as their concerns in dealing with the trials that confront those left behind after the loss of a loved one. The Widow's  group meets on the second Thursday of the month from September through May, weather permitting.

The St Casimir Adult Choir is open to all members who wish to join in the praises of God in song. Our choir normally sings for the Christmas and Easter liturgies as well as for Confirmation and other special occasions as they arise. We are always looking for musicians to add a special touch to the praises we sing. If you would like to join us with your instrumental talents or in singing, please contact Sr. Jeanne through the parish recory at 740-546-3463.