Surname Polonca (Polonca 
) , worldwide, is a rare cognomen. The surname Polonca is characteristic of Slovenia, where it is quite a common surname, Austria, where it is a rare surname, and Denmark, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Slovenia, Brazil, and Austria. Likewise, Polonca is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Polonca | Denmark, Austria, United States, Slovenia, Brazil |