The birthplace could have been expressed as the town or as the Gubernia (County/Province) the town was situated in
All my great grandparents were born in the Suwalki Lomza Gubernias in NE Poland as expressed in UK 1871 or 1881 Censuses. But their UK Naturalisation records gave their actual town of residence in those Gubernias, and in some cases there were also birth or marriage records on JRI Poland.
In one case, one ancestor was not naturalised but he gave his place of birth on the 1911 census (but had not on the 1871, 1881 1891 nor 1901 censuses) - as it was Suwalki Town in Suwalki Gubernia, and this helped solve a mystery, as the town was the capital of the Gubernia.
Note there are lots of places with the same name, and you may need to look at all possible sources to determine which is the right one. Cross referencing is important.
Jill Whitehead, Surrey, UK