The southern and western borders of the Lemko Region are not disputed, as the distinction between Poles and Lemkos is quite distinct. The southern border coincides with the Polish state border. The eastern border of the Lemko Region is problematic. Twentieth-century ethnographers (Roman Reinfuss, J. Szemlej, Zdislaw Stieber, Ivan Zilyns'kyj, et al.) generally consider the area between the Oslawa and Solinka rivers to be a transitional Lemko-Bojko territory. The area between the Solinka and San Rivers is ethnographically Bojko, but has historically been considered part of the Lemko Region.4
The westernmost part of the Lemko Region extends into Nowy Targ county, where there is an island of four Lemko villages: Czarna Woda/Chorna Voda, Biala Woda/Bila Voda, Szlachtowa/Shljachtova and Jaworki/Javirky. The northern part of Krosno county contains another island of Lemko villages, including Krasna, Weglowka/Vanivka, Bonarowka/Bonarivka,5 Oparowka/Oparivka, Rzepnik/Ripnyk, and Gwozdzianka/Hvozdjanka.