Higashichikuma (東筑摩郡, Higashichikuma-gun) is a district located in Nagano Prefecture, Japan. As of October 1, 2011, the district has an estimated population of 23,044. The total area is 268.42 km2. Northern Higashichikuma is increasing its population, while the Southern Higashichikuma is decreasing. The district has a sister city relationship with the city of Chuncheon in South Korea. There are five villages within the district. * Asahi * Chikuhoku * Ikusaka * Omi * Yamagata