38.7% live in New York
11.9% live in Massachusetts
10.3% live in New Jersey
If you don't like people
named mcguinness
you should probably move to
Washington DC (None live there).
Interesting fact: Rhode Island
is the state with the most
last name mcguinness per capita.
Check out the popularity
of the last name mcguinness
for each state in the map below.