12.2% live in Pennsylvania
9.0% live in Texas
6.2% live in California
If you don't like people
with the name mcwilliams
you should probably go to
Hawaii (None live there).
Cool fact: Mississippi
is the state with the most
last name mcwilliams per capita.
Check out the popularity
of the last name mcwilliams
for each state in the map below.