13.7% live in New York
11.6% live in Illinois
7.7% live in Michigan
If you don't like people
with the name mcduffee
you should probably go to
Rhode Island (None live there).
Interesting fact: New Hampshire
is the state with the most
last name mcduffee per capita.
Check out the popularity
of the last name mcduffee
for each state in the map below.