Chakavian
Chakavian in its actual use is the least spoken Serbo-Croatian dialect, being spoken only by 12% Croats. It is now mostly reduced in southwestern Croatia along the eastern Adriatic: Adriatic islands, and sporadically in the mainland coast, with rare inland enclaves up to central Croatia, and minor enclaves in Austria and Montenegro. All areas of old contacts with Romance languages.
Italian language in Croatia
In the past the language had a much larger population than it does now: the Italian (Venetian speaking) population constituted (according to the Italian linguist Bartoli) nearly one third of Dalmatians in the second half of the 18th century. According to the Austrian census it had decreased from 22% in 1816 to 12.5% in 1853, down to a mere 2.9% in 1910.