Kiernan family name history and map
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Kiernan in 1911 Ireland
The 1911 Census recorded 2,759 people named Kiernan in Ireland, about 0.063% of everyone living in the country at the time and the 323rd most common surname overall. The name was split fairly evenly between men and women: 1,409 men and 1,346 women. (A small number, 4, had no sex recorded.)
Counties with Kiernan in Ireland
Longford was Kiernan country: 26.9% of them (743 people) lived there in 1911. Next came Dublin (472), Cavan (441), Leitrim (424) and Westmeath (224).

Kiernan average age in 1911
The average Kiernan in 1911 was 31.2 years old, 30.9 for men and 31.6 for women; slightly older 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.
Kiernan literacy in 1911
Of the Kiernans whose literacy was recorded, 79.5% could both read and write, 4.5% could read but not write, and 15.9% 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.
Kiernan common first names
The most common male names were John (200), Patrick, James, Thomas and Michael; the same five names that topped the list nationally. For women it was Mary (197), followed by Bridget, Kate, Catherine and Annie.
Kiernan occupations in 1911
The most common occupation among Kiernans was farmer, 22.6% of them (623 people). Next came scholar / student (19.6%), general labourer (3.7%), farm labourer (3.6%) and domestic servant (2.1%). Grouped by sector, agriculture accounted for 26.6% of all Kiernans, followed by general labourers, domestic service and retail & commerce.
What religion is Kiernan?
Kiernans were overwhelmingly Roman Catholic, 97.5% of them. The remainder were mostly Anglican (2.2%).

Visitor Notes
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Added by
Pete F
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Kiernan statistics (1911)
Number: 2,759
Rank: 323
Average Age: 31
Kiernan in the USA (2020)
Number: 5,630
Rank: 5,900
Note: If there were less than 100 in the USA census it will show as zero.