The Archdiocese of Milwaukee was established on November 28, 1843 and was created an archbishopric on February 12, 1875. The ... archdiocese covers 4,758 square miles in southeast Wisconsin and includes the following counties: Dodge, Fond du Lac, Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Walworth, Washington and Waukesha. read more