St. Catherine of Siena Roman Catholic Church
Philadelphia, Delaware
Services
Mass
Daily Mass
Last updated May 2026
~4,293
estimated members
Based on ARDA 2020 data, this is likely one of 34 Catholic congregations in New Castle County, DE, with an average size of approximately 4,293 members. Catholic accounts for 54% of the county's 484 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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