/ Nazwy mieszkanców - the names of a city/country residents in Polish
a person who lives in the city of Krakow - krakowianin
a person who lives in the vicinity of Krakow - krakowiak
Actually, I would use the term Krakowiak only in regards to a village man in the traditional costume.
but that also includes folk in the town of Krakow..
Krakowiacy, mieszkańcy wsi w okolicach Krakowa, w ujęciu hist. - mieszkańcy ziemi krakowskiej.
Well, yes, but that must be a really old meaning, probably from the XV or XIV century (en.wikipedia.org/wiki/Ziemia).