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Betsukai (別海町, Betsukai-chō) is a town located in Nemuro Subprefecture, Hokkaido, Japan. As of April 30, 2017, the town has an estimated population of 15,179, and an area of 1,320.15 km2 (the second largest in Hokkaido). The town is primarily agricultural, with numerous dairy farms. It comprises a part of the agricultural region referred to as "Milk Land Hokkaido".