16.5% live in South Dakota
15.4% live in Massachusetts
7.7% live in Maryland, Wisconsin and Washington
If you don't like people
with the name colwill
you should probably go to
New Hampshire (None live there).
Interesting fact: South Dakota
is the state with the most
last name colwill per capita.
Check out the popularity
of the last name colwill
for each state in the map below.