Parish Office 716 Madison St, Oconto WI 54153 920-835-5900 holytrinity@holy3.org Parish Office Hours Monday: 7:30 am - 4:00 pm Tuesday: 7:30 am - 4:00 pm Wednesday: 7:30 am - 4:00 pm Thursday: 7:30 am - 4:00 pm Friday: Closed