The majority of people
with the surname Koopman
are born in June
and die in December
born dead
11.5% live in New York
11.0% live in Illinois
10.7% live in Iowa
If you don't like people
called koopman
you should probably go to
Maine (None live there).
Fun fact: Iowa
is the state with the most
last name koopman per capita.
Check out the popularity
of the last name koopman
for each state in the map below.
