| Izunokuni | |
| Native Name Lang: | ja |
| Settlement Type: | City |
| Image Blank Emblem: | Emblem of Izunokuni, Shizuoka.svg |
| Blank Emblem Type: | Emblem |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | |
| Coordinates: | 35.0333°N 194°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Chūbu (Tōkai) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Shizuoka |
| Leader Title: | Mayor |
| Leader Name: | Masayuki Yamashita |
| Area Total Km2: | 94.62 |
| Population Total: | 48579 |
| Population As Of: | July 2019 |
| Population Density Km2: | auto |
| Timezone1: | Japan Standard Time |
| Utc Offset1: | +9 |
| Blank Name Sec1: | City Symbols |
| Blank1 Name Sec1: | - Tree |
| Blank1 Info Sec1: | Nageia nagi |
| Blank2 Name Sec1: | - Flower |
| Blank2 Info Sec1: | viola |
| Blank Name Sec2: | Phone number |
| Blank Info Sec2: | 055-948-1413 |
| Blank1 Name Sec2: | Address |
| Blank1 Info Sec2: | 340-1 Nakaoka Izunokuni-shi, Shizuoka-ken 410-2292 |
right|thumb|270px|Izunokuni City Hall is a city located in Shizuoka Prefecture, Japan., the city had an estimated population of 48,579 in 21,257 households [1] and a population density of 506 persons per km2. The total area of the city is 94.62sqkm.
Izunokuni is located on the northern "neck" of the Izu Peninsula in eastern Shizuoka Prefecture. The region is hilly, with numerous hot springs. The climate of the region is temperate maritime, with hot, humid summers and short, cool winters, with the warm Kuroshio Current offshore having a moderating effect.
Per Japanese census data,[2] the population of Izunokuni has been relatively stable over the past 30 years.
The city has a climate characterized by characterized by hot and humid summers, and relatively mild winters (Köppen climate classification Cfa). The average annual temperature in Izunokuni is 16.0 °C. The average annual rainfall is 1981 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.5 °C, and lowest in January, at around 6.2 °C.[3]
During the late Heian and Kamakura periods, the town of Nirayama within the current borders of Izunokuni was the home of the Later Hōjō clan, who dominated Japanese politics in the 12th century. A castle was established at Nirayama by Ise Moritoki in 1493. During the Edo period, most of Izu Province was tenryō territory under direct control of the Tokugawa shogunate, who ruled Izu and parts of eastern Suruga Province from a daikansho established at Nirayama. After the Meiji Restoration, the area became the short-lived Nirayama Prefecture, which was merged into the equally short-lived Ashigara Prefecture in 1871. From 1876, the area has been part of Shizuoka Prefecture. During the cadastral reform of 1886, the area was reorganized into several villages under Kimisawa District, which was with Tagata District in 1896. In 1934, the village of Izunagaoka was elevated to town status, followed by Ōhito in 1940, and Nirayama in 1962.
The city of Izunokuni was created on April 1, 2005 from the merger of the towns of Izunagaoka, Nirayama and Ōhito (all from Tagata District).
Izunokuni has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 17 members. The city contributes one member to the Shizuoka Prefectural Assembly.The current mayor of the city is Masayuki Yamashita, succeeding Toshiko Ono in 2021.
The economy of Izunokuni is dominated by agriculture (strawberries and tomatoes) and by tourism related to the hot spring resort industry.
Izunokuni has six public elementary schools and three public junior high schools operated by the city government, and two public high schools operated by the Shizuoka Prefectural Board of Education. The prefecture also operates one special education school for the handicapped.
thumb|150px|right|Nirayama Reverberatory Furnace site
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