A city county (Polish: Miasto na prawach powiatu, lit. city with powiat rights) is a city in Poland that has the status of a county (Polish: powiat). There are 65 of them in total. Sometimes a city county will also be referred to in Polish as Polish: powiat grodzki; this term however is not official (it was used during the interwar times of the Second Polish Republic). A modern city with powiat rights should not be confused with the interwar city county.
City counties are distinct from and independent of the 314 regular powiats (sometimes referred as 'land counties' (Polish: powiaty ziemskie), again a term that was used in the interwar period and is not used in modern Polish law).
References
City with powiat rights Wikipedia(Text) CC BY-SA