Main country
United States
1,373 people
46.7% of total
Surname
Grennan
2,942 worldwide · 19 countries
2,942
Total population
19
Countries
1 in every 2,753,229
Frequency
Rarity
Rare
Dispersion
Regional
Top countries
1
United States
1,373
46.7%
2
Ireland
916
31.1%
3
England
281
9.6%
4
Australia
156
5.3%
5
Canada
128
4.4%
World distribution
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