1901 DED	1901 Townland	1911 Townland	1911 DED	Barony	Parish	Union
Birr (Rural)	Military Road,
Birr (Rural)	Ballindarra (Rural)	Ballindarra (Pt. of Rural).	Birr Rural
Birr (Rural)	Ballindown	Ballindown	Birr Rural	Eglish	Eglish	Parsonstown
Birr (Rural)	Ballinree	Ballinree	Birr Rural
Birr (Rural)	Ballywilliam	Ballywilliam	Birr Rural
Birr (Rural)	Barrack Street	Barrack St.	Birr Rural
Birr (Rural)	Boherboy	Boherboy	Birr Rural	Ballybritt	Birr	Parsonstown
Birr (Rural)	Clonebrone	Clonbrone	Birr Rural
Birr (Rural)	Clonoghil Lower	Clonoghil Lower	Birr Rural	Ballybritt	Birr	Parsonstown
Birr (Rural)	Clonoghil Upper (Rural)	Clonoghil Upper (Pt. of Rural).	Birr Rural
Birr (Rural)	Coolnagrower	Coolnagrower	Birr Rural	Ballybritt	Birr	Parsonstown
Birr (Rural)	Crinkill	Crankill	Birr Rural	Ballybritt	Birr	Parsonstown
Birr (Rural)	Derrinduff	Derrinduff	Birr Rural
Birr (Rural)	Grove Street	Grove St.	Birr Rural
Birr (Rural)	Lisheen (part of Rural)	Lisheen (Pt. of Rural)	Birr Rural
Birr (Rural)	Military Barrack	Military Road	Birr Rural
Birr (Rural)	School Street	School St. (Pt. of)	Birr Rural
Birr (Rural)	Swag Street	Swag Street	Birr Rural
Birr (Rural)	Woodfield (part of Rural)	Woodfield or Tullynisk (Pt. of Rural)	Birr Rural