24.1% live in Michigan
18.6% live in New Jersey
9.5% live in New York and Pennsylvania
If you don't like people
with the name rockafellow
you should probably move to
New Hampshire (None live there).
Fun fact: South Dakota
is the state with the most
last name rockafellow per capita.
Check out the popularity
of the last name rockafellow
for each state in the map below.