Higashiōsaka (東大阪市,Higashiōsaka-shi; literally "East Osaka City") is acity located inOsaka Prefecture,Japan. As of 1 July 2023[update], the city had an estimatedpopulation of 486,464 in 233,124 households and apopulation density of 7,874 persons per km2.[1] The total area of the city is 61.78 square kilometres (23.85 sq mi). The city is known as one of the industrial cities of Japan and "therugby football town".
Higashiōsaka is located in the eastern part of theOsaka Plain, bordered by the Osaka metropolis to the west. Most of the city area is flat lowlands laced with rivers and has been subject to periodic flooding. The main rivers include the Nagase River, Onji River, Tamagushi River, and Daini Neya River. The eastern part of the city rises to theIkoma Mountains, forming the border with Nara Prefecture. The city measures approximately 11.2 kilometers from east-to-west by 7.9 kilometers from north-to-south.[1]
Higashiōsaka has aHumid subtropical climate (KöppenCfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Higashiōsaka is 15.6 °C. The average annual rainfall is 1475 mm with September as the wettest month. The temperatures are highest on average in August, at around 27.7 °C, and lowest in January, at around 4.2 °C.[2]
The location of Higashiōsaka corresponds to the central part ofKawachi Province. In ancient times, this area was an extension ofOsaka Bay called Kawachi Bay, which gradually became separated from the sea and became a lake. The lake gradually became land due to the accumulation of sediment by theYamato River. During theKofun andAsuka periods, this was the homeland of theMononobe clan, and was on the main road between theYamato Basin and the port at Naniwa, with sea connections to the Asian continent. During theHeian period, the area was largely controlled byHiraoka Shrine. From theMuromachi period, it was the base of theHatakeyama clan to control Kawachi Province, but due to internal conflicts it can under the control of theMiyoshi clan. Later it was the site of battles during the 1615Siege of Osaka. In theEdo Period, flood control projects on the Yamato River created a large amount of reclaimed land, which was developed by wealthy Osaka merchants for rice and cotton production.
The modern city was founded on February 1, 1967, by a merger of three cities, Fuse (布施),Kawachi (河内) and Hiraoka (枚岡). On April 1, 2005, Higashiōsaka became aCore city with increased local autonomy.
Higashiōsaka has amayor-council form of government with a directly elected mayor and aunicameral city council of 38 members. Higashiōsaka contributes five members to theOsaka Prefectural Assembly. In terms of national politics, the city is part of Osaka 13th district of thelower house of theDiet of Japan.
Higashiōsaka is one of the most densely populated areas of small and medium-sized enterprises in Japan, and many small factories with high technology occupy a global share. The ratio of factories to the area is the highest in Japan. The number of factories is also the highest except for government-designated cities such as Osaka City and Yokohama City. However, industry has been decreasing in recent years, and there are cases where factory sites have been converted to residential areas for commuters to the Osaka metropolis.
Yamamoto Kogaku, an eyewear manufacturer, known for its brandSwans, is headquartered in the city.[4] The city is also home ofRAYS, a high-end wheel manufacturer for both motorsport and street use.[5]