Surname Maps for the OSullivan Surname in Ireland

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Census Surname Maps for the OSullivan Surname

Surname Map for OSullivan in 1901 Surname Map for OSullivan in 1911

Farmer Maps

Farmer Map for OSullivan in 1901 Farmer Map for OSullivan in 1911

Rank Map

Rank Map for OSullivan in 1901

Religion Maps

Catholic Map for OSullivan in 1901 Presbyterian Map for OSullivan in 1901
Anglican Map for OSullivan in 1901 None/Not Given Map for OSullivan in 1901

Language Maps

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.
Irish and English Map for OSullivan in 1901 Irish only Map for OSullivan in 1901
English only Map for OSullivan in 1901

Statistics

Surname Counts and Rankings

There were 4,213 with the surname OSullivan in Ireland in 1901 and 4,331 in 1911.
This ranks the surname 175th in 1901 and 173rd in 1911.

Surname Count in Connacht in 1901: 37
Surname Ranking in Connacht in 1901: 592nd

Surname Count in Leinster in 1901: 206
Surname Ranking in Leinster in 1901: 570th

Surname Count in Munster in 1901: 3,951
Surname Ranking in Munster in 1901: 42nd

Surname Count in Ulster in 1901: 19
Surname Ranking in Ulster in 1901: 932nd



Religion

Religion statistics for OSullivan in 1901 - Catholic: 99%

Religion statistics for OSullivan in 1911 - Catholic: 99%, Anglican: 1%



Most Common Male Forenames associtated with OSullivan

The numbers in brackets represent the number of people with this forename in 1901. Note that not everyone specified their gender in the census.



Most Common Female Forenames associtated with OSullivan

The numbers in brackets represent the number of people with this forename in 1901. Note that not everyone specified their gender in the census.



Surnames with a Similar Spelling to that of OSullivan

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 OSullivan is also Frequent




Comment / Enquiries

Please feel free to comment or place an enquiry of interest to people with the OSullivan surname.