Main country
United States
9 people
45% of total
Surname
Woulff
20 worldwide · 4 countries
20
Total population
4
Countries
1 in every 405,000,000
Frequency
Rarity
Rare
Dispersion
Local
Top countries
1
United States
9
45%
2
Canada
5
25%
3
Belgium
4
20%
4
Russia
2
10%
World distribution
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