Cathedral of Our Lady of Perpetual Help Church
Rapid City, South Dakota
Last updated May 2026
~874
estimated members
Based on ARDA 2020 data, this is likely one of 10 Catholic congregations in Pennington County, SD, with an average size of approximately 874 members. Catholic accounts for 16% of the county's 137 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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