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.
Penmachno Parish; Statistics; Area 11208 acres; Population 615 males, 636 females, total 1251
- Penmachno Parish Church Attendance - usual - 60/70 No Sunday school is kept at present Services in Welsh Informant; David Williams, Registrar
- Sion, Wesleyan Methodist Erected 1810 Attendance - morning 145, afternoon 206, evening 229 Robert Jones, Wesleyan Minister, Conway
- Chapel Lyn y Porth, Calvinistic Methodists Erected 1806 Used as a Day School Attendance - morning 165, afternoon 180, evening 255 "This is high country and the sunday a very stormy weather" David Davies, Minister
- Capel Rhyd y Meirch, Calvinistic Methodists Erected 1834 Not used exclusively as a place of worship Attendance - morning 40 scholars, afternoon 52, evening 40 David Davies, Minister