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Aisai (愛西市, Aisai-shi) is a city located in Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 61,320 in 23,451 households, and a population density of 919 persons per km². The total area of the city is 66.70 square kilometres (25.75 sq mi). Aisai is a member of the World Health Organization’s Alliance for Healthy Cities (AFHC).


Aisai is located in the coastal flatlands of far western Aichi Prefecture, bordering Gifu Prefecture on the west. It has a short border with Mie Prefecture to the southwest. The Kiso River and the Nagara River pass through the city.

Surrounding municipalities

Aichi Prefecture Tsushima Kanie Inazawa Yatomi Ama Mie Prefecture Kuwana Gifu Prefecture Kaizu


Per Japanese census data, the population of Aisai has been relatively steady over the past 30 years.


The city has a climate characterized by hot and humid summers, and relatively mild winters (Köppen climate classification Cfa). The average annual temperature in Aisai is 15.5 °C. The average annual rainfall is 1730 mm with September as the wettest month. The temperatures are highest on average in August, at around 27.8 °C, and lowest in January, at around 4.3 °C.


During the Edo period, the area of modern Aisai was controlled by the Yokoi clan, retainers of the Owari Tokugawa of Nagoya. During the Meiji period, the area was organized into several villages under Kasai District and Kaito District, Aichi Prefecture, which later became Ama District, Aichi in the Taishō period. The city of Aisai was created through the merger on April 1, 2005 of the towns of Saya and Saori and villages of Hachikai and Tatsuta.


Aisai has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 18 members. The city contributes one member to the Aichi Prefectural Assembly. In terms of national politics, the city is part of Aichi District 8 of the lower house of the Diet of Japan.


Aisai has twelve public elementary schools and eight public junior high schools operated by the city government, and two public high schools operated by the Aichi Prefectural Board of Education. There are also two private high schools. The prefecture also operates one special education school for the handicapped.


Aisai is noted for its production of edible lotus root. Other main agricultural include ginger, strawberries, tomatoes, and the brewing of sake.



Central Japan Railway Company - Kansai Main Line Eiwa Meitetsu – Tsushima Line Shobata – Fujinami Meitetsu – Bisai Line Saya – Hibino --(Tsushima)-- Machikata--(Inazawa)--Fuchidaka


Higashi-Meihan Expressway National Route 1 National Route 155

Notable people from Aisai

Katō Takaaki , pre-war Prime Minister of Japan Shoichi Yokoi, Imperial Japanese Army holdout found in Guam Daiki Wakamatsu, professional soccer player
This dGuide uses material from the Wikipedia,
released under the Creative Commons Attribution-Share-Alike License 3.0.


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