Dynastree maps has a new tool that can find the geographical distribution of surnames in USA. by typing your surname in search box you can find the distribution of your surname sorted by states. Besides from the USA surnames database users can also search and view the geographical distribution of Canada.
According to Dynastree Map website
Here you find the absolute and relative distribution of your surname: the absolut distribution will give you an approximate number of persons with the surname living in a certain state. The relative distribution indicates the proportion of persons with that surname in a certain state in relation to the total size of the population.
Image Source : Dynastree maps out your last name
