Kaizuka, Osaka

Kaizuka (貝塚市, Kaizuka-shi) is a city located in Osaka Prefecture, Japan. As of 1 January 2022, the city had an estimated population of 83,995 in 37,778 households and a population density of 1900 persons per km².[1] The total area of the city is 43.93 square kilometres (16.96 sq mi).

Mizuma Temple in Kaizuka
Mizuma Temple in Kaizuka
Flag of Kaizuka
Official seal of Kaizuka
Location of Kaizuka in Osaka Prefecture
Location of Kaizuka in Osaka Prefecture
Kaizuka is located in Japan
Location in Japan
Coordinates: 34°26′N 135°22′E / 34.433°N 135.367°E / 34.433; 135.367
 • MayorTatsuo Fujiwara
 • Total43.93 km2 (16.96 sq mi)
 (January 1, 2022)
 • Total83,995
 • Density1,900/km2 (5,000/sq mi)
Time zoneUTC+09:00 (JST)
City hall address1-17-1 Hatakenaka, Kaizuka-shi, Osaka-fu 597-8585
WebsiteOfficial website
TreeKaizukaibuki (Juniperus chinensis 'Kaizuka')
Kaizuka CIty Hall


Kaizuka is located in the southern part of Izumi Region in Osaka Prefecture, bordered by Osaka Bay to the northwest. The Kogi River flows from east to west, the Tsuda River forms the line between this city and Kishiwada City, and the Mide River is a city boundary with Izumisano City. Nankai Main Line and Hanwa Line run from south to north, and the Mizuma Railway runs from east to west. Mount Izumi Katsuragi is partly in Kaizuka territory.

Neighboring municipalitiesEdit

Osaka Prefecture

Wakayama Prefecture


Kaizuka has a Humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Kaizuka is 14.6 °C. The average annual rainfall is 1475 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.6 °C, and lowest in January, at around 3.3 °C.[2]


Per Japanese census data,[3] the population of Kaizuka has increased steadily over the last century..

Historical population
1920 24,678—    
1930 31,320+26.9%
1940 42,797+36.6%
1950 53,586+25.2%
1960 61,067+14.0%
1970 73,366+20.1%
1980 81,162+10.6%
1990 79,234−2.4%
2000 88,523+11.7%
2010 90,531+2.3%


The area of the modern city of Izumisano was within ancient Izumi Province. The area was a stronghold of Ishiyama Hongan-ji during the Sengoku period. In the Edo Period, much of the city area was controlled by the Osaka machi-bugyō and by Kishiwada Domain. After the Meiji restoration, the town of Kaizuka established within Minami District with the creation of the modern municipalities system on April 1, 1889, along with the villages of Asogou, Shima, Kijima and Nishi-Katsuragi. Kita-Kogi and Minami-Kogi (within Hine District) were also formed. On April 1, 1896 the area became part of Sennan District, Osaka. Kaizuka annexed Asogou, Shima, Kita-Kogi, and Minami-Kogi on April1, 1931, Kijima on April 15, 1935 and Nishi-Katsuragi on April 1, 1939. Kaizuka was elevated to city status on October 1, 1943.


Kaizuka has a mayor-council form of government with a directly elected mayor and a unicameral city council of 18 members. Kaizuka contributes one member to the Osaka Prefectural Assembly. In terms of national politics, the city is part of Osaka 19th district of the lower house of the Diet of Japan.


Kaizuka has been famous for its production of wooden combs since ancient times. Made of boxwood, this remains an important handicraft and is the motif of the city's mascot character. The city economy is a mixture of industrial (textiles, steel wire and rope) and agriculture (onions, eggplant). Many residents commute to larger cities to the north, including Sakai and Osaka. Taking advantage of the city's proximity to Kansai International Airport, the Nishikinohama Industrial Park was constructed by reclaiming the offshore area of on the right bank of the mouth of the Kogi River.


Kaizuka has 11 public elementary schools and five public middle schools operated by the city government and three public high schools operated by the Osaka Prefectural Department of Education. There is also one private high school. The Osaka Kawasaki Rehabilitation University is also located in Kaizuka.




  JR WestHanwa Line

  Nankai Electric Railway -   Nankai Main Line

Mizuma Railway - Mizuma Line


Local attractionsEdit

  • Mizuma-dera
  • Koon-ji
  • Gansen-ji
  • Kumano Kodo
  • Okumizuma Onsen
  • Nishikinohama Beach


The city is promoting volleyball because it used to be the home of Nichibo Women's Volleyball Team  [ja] called Oriental Witches [ja][4][5] led by Hirofumi Daimatsu [ja].[6]

Sister city relationsEdit

Notable people from KaizukaEdit


  1. ^ "Kaizuka city official statistics" (in Japanese). Japan.
  2. ^ Kaizuka climate data
  3. ^ Kaizuka population statistics
  4. ^ (in Japanese) Oriental Witches | Kaizuka City
  5. ^ Remembering the Oriental Witches: Sports, Gender and Shōwa Nostalgia in the NHK Narratives of the Tokyo Olympics : 1. Athletes, working girls from Kaizuka | Social Science Japan Journal
  6. ^ Hirofumi Daimatsu - International Volleyball Hall of Fame

External linksEdit