1901 DED	1901 Townland	1911 Townland	1911 DED	Barony	Parish	Union
		Castletown Town	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Churchfield			Upperwoods	Offerlane	Abbeyleix
Castletown	Elderfield			Upperwoods	Offerlane	Abbeyleix
Castletown	Old Borris
Castletown	Aghafin	Aghafin	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Ballytrasna	Ballytarsna	Castletown
Castletown	Bohernaghty	Bohernaghty	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Butterisland	Butterisland	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Camphill	Camphill	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Cashel	Cashel	Castletown
Castletown	Clashnamuck	Clashnamuck	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Dangaroe	Danganroe	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Gash	Gash	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Knockcollar	Knockacoller	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Knockbrack	Knockbrack	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Lowran	Louran	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Mannin	Mannin	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Newtown	Newtown	Castletown
Castletown	Oldborris	Oldborris	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Peafield	Peafield	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Rush Hall	Rush Hall	Castletown	Upperwoods	Offerlane	Abbeyleix
Castletown	Shangownagh	Shangownagh	Castletown	Upperwoods	Offerlane	Abbeyleix