There are
306
Koscielskis in the USA
Koscielski is the
64891st
most common last name in the USA

Koscielski Genealogy

OriginsThe Koscieski surname originates from Poland, primarily found in regions with historical Polish communities.
Geographic DistributionThe Koscieski surname is most commonly found in Poland, where it has its highest concentration. It can also be found in other countries with Polish diaspora, such as the United States and Canada.
VariationsVariations of the Koscieski surname may include Koscielski, Koscelski, and Koscielsky.