Forsman is a surname of Scandinavian origin. Geographical distribution. As of 2014, 41.0% of all known bearers of the surname Forsman were residents of Sweden (frequency 1:2,498), 29.0% of the United States (1:129,388), 22.4% of Finland (1:2,548) and 1.9% of New Zealand (1:25,153). In Sweden, the frequency of the surname was higher than national average (1:2,498) in the following counties: 1. Västerbotten (1:606) 2. Västernorrland (1:1,124) 3. Dalarna (1:1,260) 4. Norrbotten (1:1,327) 5. Gävleborg (1:1,556) 6. Västmanland (1:1,695) 7. Jämtland (1:2,069) 8. Uppsala (1:2,070) 9.
https://en.wikipedia.org/wiki/Forsman