O'Riordan family name history and map
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O'Riordan in 1911 Ireland
The 1911 Census recorded 637 people named O'Riordan in Ireland; roughly one in every 6,900 people carried the name. The name was split fairly evenly between men and women: 309 men and 328 women.
Counties with O'Riordan in Ireland
The O'Riordans were heavily concentrated in Cork, home to 55.6% of them (354 people). Next came Limerick (78), Kerry (76), Armagh (20) and Dublin (20).
O'Riordan average age in 1911
The average O'Riordan in 1911 was 27.3 years old, 28.7 for men and 26.1 for women; a touch younger than the national averages of 29.6 for men and 30.5 for women. That low figure reflects just how many children there were in Edwardian Ireland, along with high infant mortality and the limits of public health at the time. For comparison, average life expectancy in Ireland today is around 83.
O'Riordan literacy in 1911
Of the O'Riordans whose literacy was recorded, 83.3% could both read and write, 1.3% could read but not write, and 15.3% could do neither. The figures were much the same for men and women. Bear in mind these figures include young children; the census itself only counted people aged nine and over when calculating illiteracy, on the grounds that it was unfair to label a child illiterate before they'd had a chance to learn.
O'Riordan common first names
The most common male names were Michael (33), Patrick, John, Timothy and Daniel. For women it was Mary (43), followed by Ellen, Bridget, Julia and Kate.
O'Riordan occupations in 1911
The most common entry on an O'Riordan's census form was "Scholar"; 22.8% (145) were children at school. Among the rest, the most common occupations were farmer (8%), shopkeeper / shop assistant / dealer (5%), domestic servant (3%) and farm labourer (2.7%). Grouped by sector, agriculture accounted for 11% of all O'Riordans, followed by professional, retail & commerce and domestic service.
What religion is O'Riordan?
O'Riordans were overwhelmingly Roman Catholic, 99.7% of them. The remainder were mostly Baptist (0.2%).
Visitor Notes
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Added by
Pete F
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O'Riordan statistics (1911)
Number: 637
Rank: 1,107
Average Age: 27
O'Riordan in the USA (2020)
Number: 664
Rank: 36,294
Note: If there were less than 100 in the USA census it will show as zero.