Hennigan family name history and map
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Hennigan in 1911 Ireland
The 1911 Census recorded 328 people named Hennigan in Ireland; roughly one in every 13,000 people carried the name. The name was split fairly evenly between men and women: 155 men and 173 women.
Counties with Hennigan in Ireland
Mayo was Hennigan country: 40.2% of them (132 people) lived there in 1911. Next came Sligo (74), Leitrim (41), Roscommon (38) and Cork (35).

Hennigan average age in 1911
The average Hennigan in 1911 was 30.7 years old, 31.0 for men and 30.4 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.
Hennigan literacy in 1911
Of the Hennigans whose literacy was recorded, 71.2% could both read and write, 4.5% could read but not write, and 24.3% could do neither. Women came out slightly ahead, 73.9% reading and writing against 68.2% of men. 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.
Hennigan common first names
The most common male names were John (22), Patrick, Thomas, James and Michael; the same five names that topped the list nationally. For women it was Mary (33), followed by Bridget, Margaret, Annie and Kate.
Hennigan occupations in 1911
The most common occupation among Hennigans was farmer, 25.9% of them (85 people). Next came scholar / student (24.1%), farm labourer (4.6%), general labourer (2.4%) and domestic servant (0.9%). Grouped by sector, agriculture accounted for 30.5% of all Hennigans, followed by general labourers, domestic service and retail & commerce.
What religion is Hennigan?
Hennigans were overwhelmingly Roman Catholic, 97.3% of them.

Visitor Notes
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Added by
Pete F
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Hennigan statistics (1911)
Number: 328
Rank: 1,802
Average Age: 31
Hennigan in the USA (2020)
Number: 2,637
Rank: 11,426
Note: If there were less than 100 in the USA census it will show as zero.