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Parish Detail

St. John XXIII

1800 N. Wisconsin St.
Port Washington, WI 53074

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Our three worship sites include:

Immaculate Conception Church
140 W. Church St.
Saukville, WI 53080

St. Mary Church
451 N Johnson St.
Port Washington, WI 53074

St. Peter of Alcantara Church
1802 N. Wisconsin St.
Port Washington, WI 53074
Office Hours:
Mon - Fri. 7:15 am - 4:15 pm

The parishes of Immaculate Conception, St. Mary and St. Peter of Alcantara have merged to become St. John XXIII, a thriving Catholic Community, faithfully serving the needs of others throughout Port Washington and Saukville Wisconsin.


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The Archdiocese of Milwaukee

3501 South Lake Drive
PO Box 070912
Milwaukee, WI 53207-0912

Phone:  (414) 769-3300
Toll-Free: (800) 769-9373
Fax:  (414)  769-3408