Main country
Tanzania
137,759 people
76.8% of total
Surname
Petro
179,300 worldwide · 106 countries
179,300
Total population
106
Countries
1 in every 45,176
Frequency
Rarity
Common
Dispersion
Global
Top countries
1
Tanzania
137,759
76.8%
2
Malawi
11,226
6.3%
3
Colombia
9,558
5.3%
4
United States
7,840
4.4%
5
Democratic Republic of the Congo
1,703
0.9%
World distribution
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