Duffy family name history and map
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Duffy in 1911 Ireland
The 1911 Census recorded 11,728 people named Duffy in Ireland, about 0.268% of everyone living in the country at the time and the 40th most common surname overall. The name was split fairly evenly between men and women: 5,823 men and 5,894 women. (A small number, 11, had no sex recorded.)
Counties with Duffy in Ireland
Mayo had the largest share of Duffys, 15.9% (1,869 people). Next came Donegal (1,520), Monaghan (1,497), Dublin (1,055) and Louth (613).
Duffy average age in 1911
The average Duffy in 1911 was 30.2 years old, 29.4 for men and 31.0 for women; almost exactly in line with 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.
Duffy literacy in 1911
Of the Duffys whose literacy was recorded, 71.3% could both read and write, 4.8% could read but not write, and 23.9% 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.
Duffy common first names
The most common male names were Patrick (780), John, James, Thomas and Michael; the same five names that topped the list nationally. For women it was Mary (975), followed by Bridget, Catherine, Annie and Margaret.
Duffy occupations in 1911
The most common occupation among Duffys was farmer, 19.6% of them (2,303 people). Next came scholar / student (19.6%), farm labourer (4.1%), general labourer (3.7%) and domestic servant (2.7%). Grouped by sector, agriculture accounted for 24.2% of all Duffys, followed by domestic service, general labourers and textiles & clothing.
What religion is Duffy?
Duffys were overwhelmingly Roman Catholic, 97.6% of them. The remainder were mostly Anglican (1.1%), Presbyterian (0.3%) and Methodist (0.2%).
Visitor Notes
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Added by
Pete F
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Duffy statistics (1911)
Number: 11,728
Rank: 40
Average Age: 30
Duffy in the USA (2020)
Number: 37,556
Rank: 915
Note: If there were less than 100 in the USA census it will show as zero.
