Iijima, Nagano

 is a town located in Nagano Prefecture, Japan. , the town had an estimated population of 9,446 in 3599 households, and a population density of 110 persons per km². The total area of the town is .
Geography.
Iijima is located in-between the Kiso Mountains and Mount Senjō of the Akaishi Mountains of south-central Nagano Prefecture. The Chikuma River flows through the town.
Demographics.
Per Japanese census data, the population of Iijima has remained relatively steady over the past 50 years.
Climate.
The town has a climate characterized by hot and humid summers, and cold winters (Köppen climate classification "Cfa"). The average annual temperature in Iijima is 10.9 °C. The average annual rainfall is 1611 mm with September as the wettest month. The temperatures are highest on average in August, at around 23.5 °C, and lowest in January, at around -1.3 °C.
Economy.
The local economy is agricultural, dominated by rice and horticulture.
History.
The area of present-day Iijima was part of ancient Shinano Province, and developed as a post station in the Sanshū Kaidō highway linking inland regions of Shinano with the Pacific Ocean. The area was "tenryō" territory controlled directly by the Tokugawa shogunate until the Meiji restoration. The modern village of Iijima established on April 1, 1889 by the establishment of the municipalities system and was elevated to town status on January 1, 1954. The town annexed the neighboring village of Nakakubō on September 30, 1956.
Education.
Iijima has two public elementary schools and one public middle school operated by the town government. The town does not have a high school.