Question: Nevelsk (Russian: Не́вельск ; Japanese: 本斗 , "Honto") is a port town and the administrative center of Nevelsky District of Sakhalin Oblast, Russia, located on the southwest coast of the Sakhalin Island, Sakhalin, is a large Russian island in the North Pacific Ocean, lying between 45°50' and 54°24' N, it is who's largest island, and is administered as part of Sakhalin Oblast? 

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Uglegorsk, Sakhalin Oblast: Uglegorsk (Russian: Углего́рск ) is a coastal port town and the administrative center of Uglegorsky District in Sakhalin Oblast, Russia, located on the west coast of Sakhalin Island, 277 km northwest of Yuzhno-Sakhalinsk, the administrative center of the oblast.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Sakhalin Oblast: Sakhalin Oblast (Russian: Сахали́нская о́бласть , "Sakhalinskaya oblast"; ] ) is a federal subject of Russia (an oblast) comprising the island of Sakhalin and the Kuril Islands in the Russian Far East.  The oblast has an area of 87100 km2 .  Its administrative center and the largest city is Yuzhno-Sakhalinsk.  Population: 497,973 (2010 Census).  Besides people from other parts of the former Soviet Union and the Korean Peninsula, the oblast is home to Nivkhs and Ainu, with the latter having lost their language in Sakhalin recently.  Sakhalin is rich in natural gas and oil, and is Russia's second wealthiest federal subject.

Dolinsk, Sakhalin Oblast: Dolinsk (Russian: Долинск ; Japanese: 落合 ) is a town and the administrative center of Dolinsky District of Sakhalin Oblast, Russia, located in the southeast of the Sakhalin Island in the valley of the Naiba River and its tributaries, about 45 km north of Yuzhno-Sakhalinsk and 10 km from the coast of the Terpeniye Bay of the Sea of Okhotsk.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Shakhtyorsk: Shakhtyorsk (Russian: Шахтёрск ; Japanese: 塔路 , "Tōro") is a town in Uglegorsky District of Sakhalin Oblast, Russia, located on the western coast of the Sakhalin Island, 376 km northwest of Yuzhno-Sakhalinsk, the administrative center of the oblast.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Kholmsk: Kholmsk (Russian: Холмск ), known until 1946 as Maoka (Japanese: 真岡 ), is a port town and the administrative center of Kholmsky District of Sakhalin Oblast, Russia.  It is located on the southwest coast of the Sakhalin Island, on coast of the gulf of Nevelsky in the Strait of Tartary of the Sea of Japan, 83 km west of Yuzhno-Sakhalinsk.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Gornozavodsk, Sakhalin Oblast: Gornozavodsk (Russian: Горнозаводск ; (Japanese: 内幌町 , "Naihoro") is a rural locality (a "selo") in Nevelsky District of Sakhalin Oblast, Russia, located in the southwest of the Sakhalin Island.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Tomari, Russia: Tomari (Russian: Томари ) is a coastal town and the administrative center of Tomarinsky District in Sakhalin Oblast, Russia, located on the western coast of the Sakhalin Island, 167 km northwest of Yuzhno-Sakhalinsk, the administrative center of the oblast.  As of the 2010 Census, its population was 4,541.

Nevelsk: Nevelsk (Russian: Не́вельск ; Japanese: 本斗 , "Honto") is a port town and the administrative center of Nevelsky District of Sakhalin Oblast, Russia, located on the southwest coast of the Sakhalin Island, 123 km from Yuzhno-Sakhalinsk, the administrative center of the oblast.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Nevelsky District, Sakhalin Oblast: Nevelsky District (Russian: Не́вельский райо́н ) is an administrative district (raion) of Sakhalin Oblast, Russia; one of the seventeen in the oblast.  Municipally, it is incorporated as Nevelsky Urban Okrug.  It is located in the southwest of the oblast.  The area of the district is 1445.4 km2 .  Its administrative center is the town of Nevelsk.  Population (excluding the administrative center):  (2010 Census) ;  (2002 Census) ;  (1989 Census)

Sakhalin: Sakhalin (Russian: Сахалин , ] ) is a large Russian island in the North Pacific Ocean, lying between 45°50' and 54°24' N.  It is Russia's largest island, and is administered as part of Sakhalin Oblast.  Sakhalin, which is similar in shape to and about one third the size of Honshu, is just off the east coast of Russia, and just north of Japan.  The population was 497,973 as of the 2010 census, made up of mostly ethnic Russians and a smaller Korean community.  The indigenous peoples of the island are the Ainu, Oroks and Nivkhs.

Supporting paragraphs: Nevelsk Sakhalin
Answer: Russia's