Pskov Governorate
In the course of the administrative reform carried out in 1708 by Peter the Great, the area was included into Ingermanland Governorate (known since 1710 as Saint Petersburg Governorate). Ostrov is specifically mentioned as one of the towns making up the governorate. In 1727, separate Novgorod Governorate was split off, and in 1772, Pskov Governorate (which between 1777 and 1796 existed as Pskov Viceroyalty) was established. The area was a part of Ostrovsky Uyezd of Pskov Governorate.