Main country
Japan
3,242 people
72.3% of total
Surname
Kosaka
4,484 worldwide · 45 countries
4,484
Total population
45
Countries
1 in every 1,806,423
Frequency
Rarity
Rare
Dispersion
Regional
Top countries
1
Japan
3,242
72.3%
2
Brazil
489
10.9%
3
United States
455
10.1%
4
Canada
50
1.1%
5
Guam
29
0.6%
World distribution
Loading map...