Toyokawa, Aichi

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Tezutsu Fireworks Festival
Toyokawa skyline
Flag of Toyokawa
Official logo of Toyokawa
Interactive map outlining Toyokawa
Toyokawa in Aichi Prefecture Ja.svg
  Location of Toyokawa in Aichi Prefecture
Toyokawa is located in Japan
Coordinates: 34°49′36.4″N 137°22′33.3″E / 34.826778°N 137.375917°E / 34.826778; 137.375917Coordinates: 34°49′36.4″N 137°22′33.3″E / 34.826778°N 137.375917°E / 34.826778; 137.375917
RegionChūbu (Tōkai)
First official recorded480 AD
City SettledJune 1, 1943
 • MayorMinoru Yamawaki
 • Total161.14 km2 (62.22 sq mi)
 (October 1, 2019)
 • Total183,930
 • Density1,100/km2 (3,000/sq mi)
Time zoneUTC+9 (Japan Standard Time)
– TreeJapanese Black Pine
– FlowerDwarf azalea
Phone number0533-89-2111
Address1-1 Suwa-chō, Toyokawa-shi, Aichi-ken 442-0068
WebsiteOfficial website

Toyokawa (豊川市, Toyokawa-shi) is a city in the eastern part of Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 183,930 in 72,949 households,[1] and a population density of 1,141 persons per km2. The total area of the city is 161.14 square kilometres (62.22 sq mi). Toyokawa, famous for its Toyokawa Inari temple, is blessed with a good balance of industry, commerce, agriculture and forestry, and is situated in an area rich in history, traditions, and culture.


Toyokawa is located in an area of rolling hills in southeastern Aichi Prefecture. It has a short coastline with Mikawa Bay.


The city has a climate characterized by hot and humid summers, and relatively mild winters (Köppen climate classification Cfa). The average annual temperature in Toyokawa is 15.8 °C. The average annual rainfall is 1751 mm with September as the wettest month. The temperatures are highest on average in August, at around 27.5 °C, and lowest in January, at around 4.8 °C.[2]


Per Japanese census data,[3] the population of Toyokawa has been increasing over the past 60 years.

Historical population
1950 98,332—    
1960 105,590+7.4%
1970 130,997+24.1%
1980 157,084+19.9%
1990 168,796+7.5%
2000 176,698+4.7%
2010 181,882+2.9%

Surrounding municipalities[edit]

Aichi PrefectureAichi Prefecture



The area of modern Toyokawa was settled in prehistoric times. During the Nara period, the kokubunji of Mikawa Province was established in 741.

Middle Ages[edit]

Muromachi Period[edit]

The temple of Toyokawa Inari, a popular pilgrimage destination, dates from 1441.

Sengoku Period[edit]

A number of daimyō clans under the Tokugawa shogunate originate in what are now parts of Toyokawa, most notably the Makino clan.

Early modern period[edit]

Edo Period[edit]

The area prospered during the Edo period with two post towns along the Tōkaidō, Goyu-shuku and Akasaka.

Late modern period[edit]

Meiji Period[edit]

After the Meiji Restoration, on October 1, 1889, several villages were organized with the establishment of the modern municipalities system within Hoi District, Aichi Prefecture, including Toyokawa Village. On March 13, 1893, Toyokawa was promoted to town status.

Showa Period[edit]

Toyokawa City was founded on June 1, 1943, by the merger of Toyokawa town with neighboring Ushikubo Town and Yawata Village, all from Hoi District.

In 1939 the massive Toyokawa Naval Arsenal was established, one of the largest producers of machine guns, aviation ordnance and ammunition in the Empire of Japan. It was also had sections that produced military-issue katana, bayonets, and glass lenses for use in cameras, binoculars, and similar equipment. During World War II, many thousands of civilians were conscripted or volunteered to work at the Arsenal, and towards the end of the war, this workforce included hundreds of middle school students and high school girls. On August 7, 1945, the Toyokawa Naval Arsenal was targeted by a flight of B-29 bombers. About 2,500 people were killed during the Toyokawa Air Raid.

Toyokawa was one of the last places to be targeted using conventional explosive and incendiary bombs in the closing days of World War II, occurring the day after Hiroshima was destroyed by an atomic bomb.[4]

Contemporary history[edit]

After WWII[edit]

After the war, on April 12, 1955, Toyokawa annexed Mikami village from Yana District. This was followed by the neighboring town of Goyu from Hoi District on April 1, 1959. Toyokawa further expanded on February 1, 2006, by annexing Ichinomiya, On January 15, 2008, the towns of Otowa and Mito became part of Toyokawa, and finally on February 1, 2010, the town of Kozakai likewise was merged into Toyokawa City.


Toyokawa City Hall

Toyokawa has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 30 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.

Military facilities[edit]

External relations[edit]

Twin towns/sister cities[edit]


Sister cities
Friendship city


Toyokawa has 26 public elementary schools and 10 public junior high schools operated by the city government, and five public high schools operated by the Aichi Prefectural Board of Education. There is also one private high school. The prefecture also operates one special education school for the handicapped.



Conventional lines[edit]

JR logo (central).svg Central Japan Railway Company
Meitetsu logomark 2.svg Meitetsu



Japan National Route[edit]



  • Port of Mito(Port of Mikawa)

Local attractions[edit]

Toyokawa Inari Omotesando
  • Ina Castle
  • Makino Castle
  • Ushikubo Castle

Notable people from Toyokawa[edit]

Sion Sono


  1. ^ Toyokawa City official statistics (in Japanese)
  2. ^ Toyokawa climate data
  3. ^ Toyokawa population statistics
  4. ^ Air War Pacific Chronology: America's Air War Against Japan in East Asia and the Pacific 1941–1945 by Eric Hammel, (Pacifica, CA: Pacifica Press, 1988, ISBN 0-935553-26-6)
  5. ^ "豊川市 姉妹都市キュパティーノ市".
  6. ^ "International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Archived from the original on December 24, 2015. Retrieved November 21, 2015.

External links[edit]