41.8% live in New York
12.7% live in California
9.1% live in New Jersey and Illinois
If you don't like people
called rivadeneira
you should probably go to
New Hampshire (None live there).
Fun fact: New York
is the state with the most
last name rivadeneira per capita.
Check out the popularity
of the last name rivadeneira
for each state in the map below.