It had an area of 9,600 square kilometres (3,700 sq mi) and, as of 1956, had a population of 853,000.

Municipalities were Boryslav, Drohobych, Peremyshl, Sambir, Stryi.

After the oblast was retaken from German occupation on August 15, 1944, three raions were renamed: Zhydechuv to Zhydachiv, Streliski Novi to Novi Strelyshcha, and Ustryki Dolni to Nyzhnio Ustryki.

On December 10, 1951, Nyzhnio Ustryky Raion was followed along with another transferring process to Poland (see 1951 Polish-Soviet territorial exchange).

Five more raions were liquidated on January 21, 1959: Dubliany, Zhuravno, Krukenych, Novi Strelyshcha, and Strilky.