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.
Criccieth Parish and Borough; Statistics; Area 1678 acres; Population 379 males, 418 females, total 797
- Criccieth Parish Church Attendance - morning 54, afternoon 31, evening 7 Services in Welsh John Jones, Rector
- Large Chapel, Welsh Calvinistic Methodist Erected c 1822 Attendance - afternoon 172, evening 189 "The day being cold the congregation was less in the evening than usual of about 50" John Jones, Elder, Ynysgain
- Capel y Meas (?), Wesleyan Methodist Erected 1809 Attendance - afternoon 102, evening 100 David Cadwaladr, Steward, Prince of Wales
- Penmaes, Baptist Erected c 1791 Attendance - morning 34, afternoon 62 [Comment - cold day, 10 fewer both sessions] David Williams, Deacon