Church and chapel data from The Religious census of 1851 : A Calendar of the returns relating to Wales, Vol 11, North Wales. Ed. by Ieuan Gwynedd Jones, UWP, 1981. The names given towards the end of each entry are those of the informants.
Rhiw Parish; Statistics; Area 1653 acres; Population 160 males, 216 females, total 376
- Aelrhiw Parish Church Attendance - morning 15 Services in Welsh "Sometimes double or treble the number attend Divine Service, but generally speaking the people of this parish are Dissenters most inimically opposed towards the Church" Griffith Roberts, Rector
- Pisca, Wesleyan Methodists Erected 1837 Attendance - morning 41 scholars, afternoon 55, evening 71 William Jones, Leader, Groeslan
- Nebo, Independent Erected 1813 Attendance - morning 80, afternoon 67, evening 90 Abram Jones, Elder Diacon