The surname "Slansky", where does it come from and..

[The Great Uniter]

... in what Polish community or polity it's more prominent or appears?

[vbnetkhio]

... in what Polish community or polity it's more prominent or appears?

it's founfd only in Czechia on locatemyname
http://www.locatemyname.com/

[Mikula]

I did genealogical researching for Slansky who came from Horní Lideč, Moravia, Czech Republic (at borderline with Slovakia)

[Karol Klačansky]

I would guess it would be someone with ancestry from silesia, but who knows.

[Aldaris]

It’s Slánský. Slansky sounds like a name of a hollywood character.

[Mikula]

It’s Slánský. Slansky sounds like a name of a hollywood character.

Slánský = Slansky - foreginers dont care about our diacritical marks