In 1938, the county was abolished and incorporated into the newly formed Ținutul Suceava, together with the counties of Hotin, Suceava, Cernăuți, Dorohoi, Rădăuți, and Câmpulung.

[2] In 1940, following the Molotov–Ribbentrop Pact and the Soviet ultimatum on 26 June 1940, Northern Bukovina (including all of Storojineț County) was occupied by the Soviet Union and incorporated into the USSR (Chernivtsi Oblast, Ukrainian SSR).

Nevertheless, in August 1944 Northern Bukovina was taken over again by the Soviet Army and the borders as of 1 January 1941 were confirmed by the 1947 Paris Peace Treaties.

[5] In 1930, the urban population consisted of the following: Storojineț with 8,695 inhabitants, Vășcăuți with 6,336, and Vijnița with 3,799.

In 1930 the urban population of Storojineț County was 18,830, which included 31.9% Jews, 31.2% Ukrainians, 20.2% Romanians, 10.7% Poles, 4.2% Germans and 1.5% Russians by ethnicity, as well as other minorities.