St. William Catholic Church

Name: St. William Catholic Church
Address: 456 N Arch St, Janesville, WI 53548, Janesville, WI, US
Telephone: (608) 755-5180

Janesville, Wisconsin

Address456 N Arch St, Janesville, WI 53548

DenominationCatholic

Phone(608) 755-5180

Last updated May 2026

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Map showing location of St. William Catholic Church

~1,542

estimated members

Based on ARDA 2020 data, this is likely one of 12 Catholic congregations in Rock County, WI, with an average size of approximately 1,542 members. Catholic accounts for 30% of the county's 174 congregations.

Source: ARDA 2020 Religious Congregations & Membership Study

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