Sahlin is a Swedish surname. Geographical distribution. As of 2014, 77.4% of all known bearers of the surname Sahlin were residents of Sweden (frequency 1:2,898), 16.5% of the United States (1:499,656), 1.8% of Norway (1:65,928), 1.1% of Finland (1:116,953) and 1.0% of Canada (1:855,768). In Sweden, the frequency of the surname was higher than national average (1:2,898) in the following counties: 1. Jämtland County (1:763) 2. Västernorrland County (1:827) 3. Västmanland County (1:1,562) 4. Gävleborg County (1:2,222) 5. Västra Götaland County (1:2,558) People.
https://en.wikipedia.org/wiki/Sahlin