County Mayo Roman Catholic Parishes:
| 1. Achill | 2. Aghamore | 3. Ardagh | 4. Attymass |
| 5. Aughagower | 6. Backs | 7. Balla and Manulla | 8. Ballina |
| 9. Ballindine | 10. Ballinrobe | 11. Ballycastle | 12. Ballycroy |
| 13. Ballyhaunis | 14. Ballysokeary | 15. Bekan | 16. Belmullet |
| 17. Bohola | 18. Bunniconlon | 19. Bunninadden | 20. Burriscarra and Ballintubber |
| 21. Carracastle | 22. Castlebar | 23. Charlestown | 24. Clare Island |
| 25. Claremorris | 26. Cong and Neale | 27. Crossboyne and Taugheen | 28. Crossmolina |
| 29. Foxford | 30. Islandeady | 31. Keelogues | 32. Kilcommon-Erris |
| 33. Kilfian | 34. Killala | 35. Killasser | 36. Kilmaine |
| 37. Kilmeena | 38. Kilmore-Erris | 39. Kilmovee | 40. Kiltane |
| 41. Kiltimagh | 42. Knock | 43. Lacken | 44. Lahardane |
| 45. Louisburgh | 46. Mayo Abbey | 47. Moygownagh | 48. Newport |
| 49. Parke | 50. Partry | 51. Robeen | 52. Shrule |
| 53. Straide | 54. Swinford | 55. Westport |
I have referred to Brian Mitchell's Book "A New Genealogical Atlas of Ireland" to confirm placement of the Roman Catholic Parishes in my County Mayo Roman Catholic Parish Map.
(Mitchell, 2002, p. 125).