Rumoi Subprefecture 留萌振興局
Subprefecture
Rumoi-shinkōkyoku
Sunset from Cape Ōgon, Rumoi City
Rumoi Subprefecture in Hokkaido
Rumoi Subprefecture Rumoi Subprefecture in Japan
Coordinates: 43°56′05″N 141°39′21″E / 43.93472°N 141.65583°E / 43.93472; 141.65583
Country	Japan
Prefecture	Hokkaido
Capital	Rumoi
Area
• Total	4,019.91 km2 (1,552.10 sq mi)
Population  (December 2011)
• Total	52,627
• Density	13/km2 (34/sq mi)
• Summer (DST)	Japan Standard Time (UTC+9)
Website	www.rumoi.pref.hokkaido.lg.jp(in Japanese)

Rumoi Subprefecture (留萌振興局, Rumoi-shinkō-kyoku) is a subprefecture of Hokkaido Prefecture, Japan. As of 2011, it had a population of 52,627 and an area of 4,019.97 square kilometres (1,552.12 sq mi). The population density of the subprefecture, 13 people per km², is very low compared to the rest of Japan. The population of Rumoi Subprefecture represents 0.96% of the overall population of Hokkaido.^[1][2]

Geography

Rumoi Subprefecture stretches broadly across the coast of the Sea of Japan in northwestern Hokkaido.

Municipalities

Name		Area (km2)	Population	District	Type	Map
Rōmaji	Kanji
Enbetsu	遠別町	590.86	2,966	Teshio District	Town
Haboro	羽幌町	472.49	7,338	Tomamae District	Town
Mashike	増毛町	369.64	4,634	Mashike District	Town
Obira	小平町	627.29	3,277	Rumoi District	Town
Rumoi (capital)	留萌市	297.44	22,242	no district	City
Shosanbetsu	初山別村	280.04	1,249	Tomamae District	Village
Teshio	天塩町	353.31	3,241	Teshio District	Town
Tomamae	苫前町	454.5	3,261	Tomamae District	Town

Mergers

Rivers

The Rumoi River 44 kilometres (27 mi) flows from Mount Poroshiri in the Hidaka Mountain range to the Sea of Japan.^[3]

History

Mashike Subprefecture was established as part of the administrative reforms of Hokkaido during the Meiji period (1868 – 1912). The capital was moved to Rumoi in 1914, and the subprefecture was renamed to Rumoi Subprefecture in the same year. Toyotomi Town) in Teshio District transferred to Sōya Subprefecture in 1948, and Horonobe was transferred to Sōya Subprefecture in 2010.

Economy

The fishing industries dominates the economy of the area, and seafood processing remains a thriving industry.^[2]