Rumoi Subprefecture
title: "Rumoi Subprefecture" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["rumoi-subprefecture"] topic_path: "general/rumoi-subprefecture" source: "https://en.wikipedia.org/wiki/Rumoi_Subprefecture" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox settlement"]
| Field | Value |
|---|---|
| name | Rumoi Subprefecture |
| native_name | 留萌振興局 |
| native_name_lang | ja |
| official_name | Rumoi-shinkōkyoku |
| settlement_type | Subprefecture |
| image_skyline | Sunset from ougon misaki.jpg |
| image_caption | Sunset from Cape Ōgon, Rumoi City |
| image_map | HokkaidoMap Rumoi subprefecture en.png |
| map_caption | Rumoi Subprefecture in Hokkaido |
| pushpin_map | Japan |
| pushpin_map_caption | Rumoi Subprefecture in Japan |
| coordinates | |
| subdivision_type | Country |
| subdivision_name | Japan |
| subdivision_type1 | Prefecture |
| subdivision_name1 | Hokkaido |
| seat_type | Capital |
| seat | Rumoi |
| area_total_km2 | 4019.91 |
| population_total | 52627 |
| population_as_of | December 2011 |
| population_density_km2 | auto |
| timezone1_DST | Japan Standard Time (UTC+9) |
| website | |
| :: |
| name = Rumoi Subprefecture | native_name = 留萌振興局 | native_name_lang = ja | official_name = Rumoi-shinkōkyoku | settlement_type = Subprefecture | image_skyline = Sunset from ougon misaki.jpg | image_alt = | image_caption = Sunset from Cape Ōgon, Rumoi City | image_flag = | flag_alt = | image_seal = | seal_alt = | image_shield = | shield_alt = | nickname = | motto = | image_map = HokkaidoMap Rumoi subprefecture en.png | map_alt = | map_caption = Rumoi Subprefecture in Hokkaido | pushpin_map = Japan | pushpin_label_position = | pushpin_map_alt = | pushpin_map_caption = Rumoi Subprefecture in Japan | coordinates = | coor_pinpoint = | coordinates_footnotes = | subdivision_type = Country | subdivision_name = Japan | subdivision_type1 = Prefecture | subdivision_name1 = Hokkaido | established_title = | established_date = | founder = | seat_type = Capital | seat = Rumoi | government_footnotes = | leader_party = | leader_title = | leader_name = | unit_pref = | area_footnotes = | area_urban_footnotes = | area_rural_footnotes = | area_metro_footnotes = | area_magnitude = | area_note = | area_water_percent = | area_rank = | area_blank1_title = | area_blank2_title = | area_total_km2 = 4019.91 | area_land_km2 = | area_water_km2 = | area_urban_km2 = | area_rural_km2 = | area_metro_km2 = | area_blank1_km2 = | area_blank2_km2 = | area_total_ha = | area_land_ha = | area_water_ha = | area_urban_ha = | area_rural_ha = | area_metro_ha = | area_blank1_ha = | area_blank2_ha = | length_km = | width_km = | dimensions_footnotes = | elevation_footnotes = | elevation_m = | population_footnotes = | population_total = 52627 | population_as_of = December 2011 | population_density_km2 = auto | population_demonym = | population_note = | timezone1 = | utc_offset1 = | timezone1_DST = Japan Standard Time (UTC+9) | utc_offset1_DST = | postal_code_type = | postal_code = | area_code_type = | area_code = | iso_code = | website = | footnotes = ::figure[src="https://upload.wikimedia.org/wikipedia/commons/a/a7/Rumoi_city_nightview.JPG" caption="Rumoi City"] ::
Rumoi Subprefecture is a subprefecture of Hokkaido Prefecture, Japan. As of 2011, it had a population of 52,627 and an area of 4019.97 km2. 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.
Geography
Rumoi Subprefecture stretches broadly across the coast of the Sea of Japan in northwestern Hokkaido.
Municipalities
::data[format=table]
| Name | Area (km2) | Population | Pop. Density | District | Type | Map | Rōmaji | Kanji |
|---|---|---|---|---|---|---|---|---|
| [[File:Flag of Enbetsu, Hokkaido.svg | frameless | 25x25px]] Enbetsu | 遠別町 | 590.86 | 2,966 | 5.02 | Teshio District | Town |
| [[File:Flag of Haboro, Hokkaido.svg | frameless | 25x25px]] Haboro | 羽幌町 | 472.49 | 7,338 | 15.53 | Tomamae District | Town |
| [[File:Flag of Mashike, Hokkaido.svg | frameless | 25x25px]] Mashike | 増毛町 | 369.64 | 4,634 | 12.54 | Mashike District | Town |
| [[File:Flag of Obira, Hokkaido.svg | frameless | 25x25px]] Obira | 小平町 | 627.29 | 3,277 | 5.22 | Rumoi District | Town |
| [[File:Flag of Rumoi, Hokkaido.svg | frameless | 25x25px]] Rumoi (capital) | 留萌市 | 297.44 | 22,242 | 74.78 | no district | City |
| [[File:Flag of Shosanbetsu, Hokkaido.svg | frameless | 25x25px]] Shosanbetsu | 初山別村 | 280.04 | 1,249 | 4.46 | Tomamae District | Village |
| [[File:Flag of Teshio, Hokkaido.svg | frameless | 25x25px]] Teshio | 天塩町 | 353.31 | 3,241 | 9.17 | Teshio District | Town |
| [[File:Flag of Tomamae, Hokkaido.svg | frameless | 25x25px]] Tomamae | 苫前町 | 454.5 | 3,261 | 7.17 | Tomamae District | Town |
| :: |
Mergers
Rivers
The Rumoi River 44 km flows from Mount Poroshiri in the Hidaka Mountain range to the Sea of Japan.
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.
References
References
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::