Main country
Ireland
19,198 people
38.5% of total
Surname
O'reilly
49,833 worldwide · 95 countries
49,833
Total population
95
Countries
1 in every 162,543
Frequency
Rarity
Moderate
Dispersion
Global
Top countries
1
Ireland
19,198
38.5%
2
England
9,869
19.8%
3
Australia
5,882
11.8%
4
United States
5,144
10.3%
5
Canada
4,354
8.7%
World distribution
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