Crosby family name history and map
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Crosby in 1911 Ireland
The 1911 Census recorded 302 people named Crosby in Ireland; roughly one in every 15,000 people carried the name. The name was split fairly evenly between men and women: 138 men and 164 women.
Counties with Crosby in Ireland
Dublin had the largest share of Crosbys, 21.9% (66 people). Next came Meath (42), Roscommon (36), Galway (29) and Antrim (22).

Crosby average age in 1911
The average Crosby in 1911 was 31.1 years old, 28.7 for men and 33.2 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.
Crosby literacy in 1911
Of the Crosbys whose literacy was recorded, 77.8% could both read and write, 4.2% could read but not write, and 18.1% could do neither. Men came out slightly ahead, 79.4% reading and writing against 76.4% of 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.
Crosby common first names
The most common male names were John (19), James, Patrick, Michael and William. For women it was Mary (26), followed by Bridget, Elizabeth, Margaret and Catherine.
Crosby occupations in 1911
The most common entry on a Crosby's census form was "Scholar"; 17.5% (53) were children at school. Among the rest, the most common occupations were farmer (11.9%), domestic servant (4.6%), textile worker (4%) and farm labourer (3.3%). Grouped by sector, agriculture accounted for 17.5% of all Crosbys, followed by domestic service, textiles & clothing and general labourers.
What religion is Crosby?
Crosbys were predominantly Roman Catholic (83.1%). The remainder were mostly Presbyterian (8.6%), Anglican (7.9%) and Seventh Day Adventist (0.3%).

Visitor Notes
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Added by
Pete F
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Crosby statistics (1911)
Number: 302
Rank: 1,903
Average Age: 31
Crosby in the USA (2020)
Number: 39,086
Rank: 874
Note: If there were less than 100 in the USA census it will show as zero.