First Christian Reformed Church
Rock Valley, Iowa
Address1401 16th St
DenominationReformed
Services
traditional worship
Sun8:30 AM
modern casual worship
Sun10:30 AM
Last updated May 2026
~513
estimated members
Based on ARDA 2020 data, this is likely one of 36 Reformed congregations in Sioux County, IA, with an average size of approximately 513 members. Reformed accounts for 69% of the county's 81 congregations.
Source: ARDA 2020 Religious Congregations & Membership Study
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