St. Thomas Apostle Catholic Church
Washington, District of Columbia
Last updated May 2026

~1,994
estimated members
Based on ARDA 2020 data, this is likely one of 41 Catholic congregations in District of Columbia, DC, with an average size of approximately 1,994 members. Catholic accounts for 21% of the county's 751 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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