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.
Aber Parish; Statistics; Area 8833 acres; Population 281 males, 262 females, total 543
- Aber Parish Church Attendance - morning 76 inc 20 scholars, afternoon 35 Services in Welsh Rob. Williams, Rector
- Aber Chapel, Weesleyan Methodists Erected 1827 Attendance - morning 60, afternoon 132 scholars, evening 120 John Evans, Wesleyan Minister, Bangor
- Bethleem, Calvinistic Methodist Erected 1828 Attendance - morning 34, afternoon 39, evening 85 William Lewis, Elder, Aber