Main country
Netherlands
3,563 people
78.5% of total
Surname
Koolen
4,540 worldwide · 29 countries
4,540
Total population
29
Countries
1 in every 1,784,141
Frequency
Rarity
Rare
Dispersion
Regional
Top countries
1
Netherlands
3,563
78.5%
2
Belgium
337
7.4%
3
Canada
199
4.4%
4
United States
89
2%
5
Germany
85
1.9%
World distribution
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