St. Mary Byzantine Catholic Church
Olean, New York
Address
331 Fountain StDenomination
CatholicLast updated September 2026
1,000-5,000
estimated members
This is likely one of 11 Catholic congregations in Cattaraugus County, NY. Catholic accounts for 47% of the county's 131 congregations.
This estimate comes from ARDA 2020 data for churches of this size and denomination in the county.
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