40.0% live in New York
27.1% live in Wisconsin
4.3% live in New Jersey, Illinois and Tennessee
If you don't like people
with the name greengrass
you should probably go to
New Hampshire (None live there).
Fun fact: Wisconsin
is the state with the most
last name greengrass per capita.
Check out the popularity
of the last name greengrass
for each state in the map below.