Surname Maps for the Riordan Surname in Ireland
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Census Surname Maps for the Riordan Surname
Note that it is likely that some Ulster-Scots speakers reported that they only spoke Irish. Both censuses contained a question concerned with whether a person spoke Irish, English or both. No other languages were mentioned.
Surname Counts and Rankings
There were 4,931 with the surname Riordan in Ireland in 1901 and 4,800 in 1911.
This ranks the surname 138th in 1901 and 144th in 1911.
Surname Count in Connacht in 1901: 66
Surname Ranking in Connacht in 1901: 563rd
Surname Count in Leinster in 1901: 76
Surname Ranking in Leinster in 1901: 700th
Surname Count in Munster in 1901: 4,759
Surname Ranking in Munster in 1901: 32nd
Surname Count in Ulster in 1901: 30
Surname Ranking in Ulster in 1901: 921st
Religion statistics for Riordan in 1901 - Catholic: 99%
Religion statistics for Riordan in 1911 - Catholic: 99%
Surnames with a similar spelling as Riordan.
The numbers in brackets represent the number of people with the given surname in 1901. If the surname is followed by a zero then it only occured in the 1911 census.
Common surnames in areas where Riordan is also frequent:
Comment / Enquiries
Please feel free to comment or place an enquiry of interest to people with the Riordan surname.