OCONNOR Surname Maps of Ireland

Where in Ireland does the family OCONNOR come from? Is OCONNOR a common surname in Ireland?
The maps on this page are based on the 1901 and 1911 census of Ireland, the data for which is available here: Census of Ireland.

OCONNOR in 1901

There were 14,627 with this surname in Ireland in 1901. The surname is ranked 23rd in Ireland in the same year, MURPHY is ranked 1st since it is the most common Irish surname.

Religion: Catholic: 14,409 (98.51%), Anglican: 144 (0.98%), Other / Not Given: 54 (0.37%), Presbyterian: 10 (0.07%), Methodist: 6 (0.04%), Protestant: 3 (0.02%), Baptist: 1 (0.01%)

OCONNOR in 1911

There were 16,911 with this surname in Ireland in 1911. The surname is ranked 17th in Ireland in the same year, MURPHY is ranked 1st since it is the most common Irish surname.

Dúchas Surname Index for OCONNOR

The Dúchas Surname Index is a set of surname associations compiled as part of the work of the Irish Folklore Commission. Below is a list of these associations for the surname OCONNOR. This is not an authoritative index but it might help you to find both the Irish language version of your surname, if one exists, and also help in finding alternative spellings of the name in question. You can learn more about the index here: Dúchas Surname Index.

OCONNOR in 1901 (Farmer)

Map is based on households which had at least one member who had an occupation containing "Farm" or "Agri".

OCONNOR in 1901 (Catholic)

Map shows the percentage of people with the surname OCONNOR who are Catholic in each locality

OCONNOR in 1901 (Anglican)

Map shows the percentage of people with the surname OCONNOR who are Anglican in each locality

OCONNOR in 1901 (Presbyterian)

Map shows the percentage of people with the surname OCONNOR who are Presbyterian in each locality

OCONNOR Presbyterian Surname Map in 1901}

OCONNOR in Scotland

The OCONNOR Surname in Scotland

Patterns associated with the OCONNOR surname

List of consecutive consonant patterns associated with this surname:

When producing these maps, I use the exact spelling in the 1901/1911 Irish Census, with the following exceptions: All surnames are converted to their uppercase equivalents. I replace all occurrences of MC and M' with MAC. And I remove all non-alphabetical characters, such as hyphens, spaces, apostrophes and accents. This results, for example, in the names Mac Vey and McVey appearing together on the same map as MACVEY. Likewise, O'Neill, Oneill, ONeill and Ó Néill appear together as ONEILL and D'Arcy and Darcy are combined as DARCY. No other type of grouping is done.

A huge amount of effort has gone into the production of these maps and I have been very careful to ensure that the census data has been processed as accurately as possible. However, I take no responsibility should I have failed in any way in this regard. Nor shall I be held responsible for any errors on the official census website. As stated, the census is available online enabling you to confirm the information presented here for yourself. Enjoy!