Bergroth is a Swedish-language surname, more common in Finland than in Sweden.
Geographical distribution
As of 2014, 54.2% of all known bearers of the surname Bergroth were residents of Finland (frequency 1:24,322), 36.0% of Sweden (1:65,645), 3.1% of Argentina (1:3,287,963), 2.9% of Australia (1:1,981,156), 1.7% of the United States (1:51,607,325) and 1.2% of Norway (1:1,028,470).
In Finland, the frequency of the surname was higher than national average (1:24,322) in the following regions: 1. Åland (1:2,153) 2. Central Ostrobothnia (1:2,229) 3. Southwest Finland (1:6,689) 4. Ostrobothnia (1:17,380) 5. Uusimaa (1:21,920)
In Sweden, the frequency of the surname was higher than national average (1:65,645) in the following regions: 1. Gävleborg County (1:7,001) 2. Västmanland County (1:21,614) 3. Jönköping County (1:38,216) 4. Uppsala County (1:43,720) 5. Södermanland County (1:46,536) 6. Stockholm County (1:53,419)