26.8% live in California
14.1% live in New York
9.9% live in New Hampshire, Massachusetts and New Jersey
If you don't like people
called swinnerton
you should probably go to
Vermont (None live there).
Cool fact: New Hampshire
is the state with the most
last name swinnerton per capita.
Check out the popularity
of the last name swinnerton
for each state in the map below.