The majority of persons
with the last name Koppen
are born in May
and die in March
born dead
16.8% live in Iowa
13.9% live in Illinois
11.1% live in New York
If you don't like people
called koppen
you should probably move to
New Hampshire (None live there).
Cool fact: Iowa
is the state with the most
last name koppen per capita.
Check out the popularity
of the last name koppen
for each state in the map below.
