Main country
United States
891 people
34.4% of total
Surname
O'brian
2,587 worldwide · 38 countries
2,587
Total population
38
Countries
1 in every 3,131,040
Frequency
Rarity
Rare
Dispersion
Regional
Top countries
1
United States
891
34.4%
2
England
424
16.4%
3
Australia
315
12.2%
4
Canada
295
11.4%
5
Ireland
249
9.6%
World distribution
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