30.0% live in Illinois
20.0% live in California
10.0% live in New York, Maryland, Delaware, Virginia and Michigan
If you don't like people
called sumulong
you should probably go to
New Hampshire (None live there).
Fun fact: Delaware
is the state with the most
last name sumulong per capita.
Check out the popularity
of the last name sumulong
for each state in the map below.