In the country population of about 1.2 million, Clo is quite a rare surname in Cyprus.
In Germany the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 82.9 million, Clo is quite a rare surname in Germany.
In Switzerland the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 8.5 million, Clo is quite a rare surname in Switzerland.
In the country population of about 2.1 million, Clo is a rare surname in Gabon.
In the country population of about 22.9 million, Clo is a rare surname in Taiwan.
In Italy the characteristic form of this surname is Clo, but other variants such as Clò, and Zoll are also occurring. In the country population of about 60.4 million, Clo is a rare surname in Italy.
In the country population of about 17.4 million, Clo is a rare surname in Zambia.
In the country population of about 25.2 million, Clo is a rare surname in Cameroon.
In Netherlands the characteristic form of this surname is Zoll, but other variants such as Clo are also occurring. In the country population of about 17.2 million, Clo is a rare surname in Netherlands.
In France the characteristic form of this surname is Clo, but other variants such as Zoll, and Chlore are also occurring. In the country population of about 67.0 million, Clo is a rare surname in France.
In Denmark the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 5.8 million, Clo is a rare surname in Denmark.
In the United States the characteristic form of this surname is Clo, but other variants such as Clò, Zoll, and Chlore are also occurring. In the country population of about 327.2 million, Clo is a rare surname in the United States.
In the country population of about 30.8 million, Clo is a rare surname in Angola.
In Belgium the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 11.4 million, Clo is a rare surname in Belgium.
In Poland the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 38.0 million, Clo is a rare surname in Poland.
In Sweden the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 10.2 million, Clo is a rare surname in Sweden.
In Austria the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 8.8 million, Clo is a rare surname in Austria.
In Canada the characteristic form of this surname is Clo, but other variants such as Zoll, and Chlore are also occurring. In the country population of about 37.1 million, Clo is a rare surname in Canada.
In Malaysia the characteristic form of this surname is Clo, but other variants such as Zoll are also occurring. In the country population of about 31.5 million, Clo is a very rare surname in Malaysia.
In the country population of about 9.8 million, Clo is a very rare surname in Hungary.
, Zoll 
, Clò 
