Ask a Ukrainian

[Domen]

Nope, most Poles there got "relocated" after WW2.

About the deportation of a quarter of a million (surviving WW2) Poles from the region of Podolia (south of Volhynia) in 1944-1946:

http://www.politologia.univ.rzeszow.pl/uploadUC/PiS/nr 1/Bronislaw_Pasierb.pdf

Before WW1, Western Podolia belonged to Austria and Eastern Podolia to Russia.

In Eastern Podolia in year 1900 there were about 304,600 Poles and in Western Podolia, also in 1900, about 358,200 Poles.

 

[Domen]

Ethnic structure of the city of Kamyanets-Podilsky (link) in year 1662:

Among taxpayers - excluding nobility and clergy (only burghers) - there were:

Poles - 1072 (44,0%)
Armenians - 696 (28,5%)
Rusyns* - 409 (16,8%)
Jews - 261 (10,7%)

*Ukrainians

Source:

D. Kołodziejczyk, "Podole pod panowaniem tureckim. Ejalet Kamieniecki 1672-1699" ("Podolia under Turkish rule. Eyalet of Kamyanets 1672-99"), Warsaw 1994.

If counting nobility and clergy then % of Poles in Kamyanets would have been even higher.

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In the 2nd half of the 16th century population of Podolia was ca. 100,000 (>5/km2) and increased to 300,000 (~16/km2) by mid-17th century.

These are low estimates, except for Kiev V. (here it is rather high). For areas A, B, C, D, E and F high estimates say that all of them had >10/km2.