McHenry family name history and map
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McHenry in 1911 Ireland
The 1911 Census recorded 416 people named McHenry in Ireland; roughly one in every 11,000 people carried the name. The name was split fairly evenly between men and women: 193 men and 223 women.
Counties with McHenry in Ireland
The McHenrys were heavily concentrated in Antrim, home to 62.3% of them (259 people). Next came Dublin (49), Derry (38), Down (23) and Donegal (11).

McHenry average age in 1911
The average McHenry in 1911 was 29.4 years old, 28.5 for men and 30.1 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.
McHenry literacy in 1911
Of the McHenrys whose literacy was recorded, 84.5% could both read and write, 3% could read but not write, and 12.5% could do neither. Women came out slightly ahead, 86.1% reading and writing against 82.6% 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.
McHenry common first names
The most common male names were John (31), Patrick, James, William and Thomas. For women it was Mary (20), followed by Margaret, Sarah, Catherine and Elizabeth.
McHenry occupations in 1911
The most common entry on a McHenry's census form was "Scholar"; 20.2% (84) were children at school. Among the rest, the most common occupations were farmer (8.7%), general labourer (3.4%), shopkeeper / shop assistant / dealer (3.1%) and textile worker (2.9%). Grouped by sector, agriculture accounted for 10.1% of all McHenrys, followed by textiles & clothing, domestic service and general labourers.
What religion is McHenry?
Most McHenrys, 59.1%, were Roman Catholic. The remainder were mostly Anglican (20.9%), Presbyterian (13.2%), Methodist (2.6%) and Congregationalist (1.2%).

Visitor Notes
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Added by
Pete F
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McHenry statistics (1911)
Number: 416
Rank: 1,531
Average Age: 29
McHenry in the USA (2020)
Number: 11,099
Rank: 3,175
Note: If there were less than 100 in the USA census it will show as zero.

