Main country
Japan
32,697 people
97.4% of total
Surname
Iwasa
33,567 worldwide · 29 countries
33,567
Total population
29
Countries
1 in every 241,308
Frequency
Rarity
Moderate
Dispersion
Regional
Top countries
1
Japan
32,697
97.4%
2
Democratic Republic of the Congo
308
0.9%
3
United States
259
0.8%
4
Brazil
176
0.5%
5
Canada
48
0.1%
World distribution
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