St. Athanasios Greek Orthodox Church
Chicago, Illinois
Services
Orthos
Divine Liturgy
Last updated May 2026
~1,010
estimated members
Based on ARDA 2020 data, this is likely one of 5 Orthodox congregations in DuPage County, IL, with an average size of approximately 1,010 members. Orthodox accounts for 1% of the county's 532 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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