St. Joseph's Catholic Church
Trenton, New Jersey
Last updated May 2026

~4,680
estimated members
Based on ARDA 2020 data, this is likely one of 23 Catholic congregations in Mercer County, NJ, with an average size of approximately 4,680 members. Catholic accounts for 58% of the county's 299 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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