Sisters of Mercy Convent
Buffalo, New York
Last updated May 2026
~4,264
estimated members
Based on ARDA 2020 data, this is likely one of 104 Catholic congregations in Erie County, NY, with an average size of approximately 4,264 members. Catholic accounts for 68% of the county's 730 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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