Yashio 八潮市 | |
|---|---|
.jpg) Yashio City office opened in 2024 | |
 Flag  Seal | |
 Location of Yashio in Saitama Prefecture | |
  Yashio | |
| Coordinates:35°49′21.1″N139°50′21.2″E / 35.822528°N 139.839222°E /35.822528; 139.839222 | |
| Country | Japan |
| Region | Kantō |
| Prefecture | Saitama |
| Area | |
• Total | 18.02 km2 (6.96 sq mi) |
| Population (February 2021) | |
• Total | 92,512 |
| • Density | 5,100/km2 (13,000/sq mi) |
| Time zone | UTC+9 (Japan Standard Time) |
| - Tree | Ginkgo biloba |
| - Flower | Gardenia jasminoides |
| - Bird | White wagtail |
| Phone number | 048-996-2111 |
| Address | 1-2-1 Chūō, Yashio-shi, Saitama 340-8588 |
| Website | Official website |
Yashio (八潮市,Yashio-shi) is acity located inSaitama Prefecture,Japan. As of 1 January 2021[update], the city had an estimatedpopulation of 92,512 in 44,288 households and apopulation density of 5100 persons per km2.[1] The total area of the city is 18.02 square kilometres (6.96 sq mi).
Located in far southeastern Saitama Prefecture at an elevation of only three meters above sea level, Yashio is on the central reaches of theNaka River, and is approximately 20 kilometers from downtown Tokyo.
Yashio has ahumid subtropical climate (KöppenCfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Yashio is 14.9 °C. The average annual rainfall is 1482 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 3.4 °C.[2]
Per Japanese census data,[3] the population of Yashio has increased rapidly over the past 60 years.
| Year | Pop. | ±% |
|---|---|---|
| 1960 | 13,307 | — |
| 1970 | 37,323 | +180.5% |
| 1980 | 62,734 | +68.1% |
| 1990 | 72,473 | +15.5% |
| 2000 | 74,954 | +3.4% |
| 2010 | 82,977 | +10.7% |
| 2020 | 93,363 | +12.5% |
The area of modern Yashio was settled in theKofun period and was part ofShimōsa Province from theNara period. During theEdo periodTokugawa shogunate, the area wastenryō territory controlled directly by the shogunate. After theMeiji restoration, the area was transferred to the new Saitama Prefecture in 1871 and divided into villages with the creation of the modern municipalities system in 1889. The village of Yashio was created withinMinamisaitama District, Saitama with the merger of the villages of Shiodome, Hachijō and Yahata on 28 September 1956. It was raised to town status on 1 October 1964 and to city status on 15 January 1972.
January 28, 2025: asinkhole opened up near the Chuo 1-chome intersection, where Saitama Prefectural Route 54 Matsudo-Soka Line, Shiodome Street, and Josuijo Street ("Water Treatment Facility" Street) intersect. A truck drove into the sinkhole within seconds of it opening; the 74-year-old driver has not been rescued as of February 5. The cause of the sinkhole is believed to be massive leakage from a damaged sewer pipe buried under the prefectural road. The sewage of 12 municipalities flows through this sewer pipe on its way to a nearby sewage treatment facility. The Saitama Prefectural government has called on the 12 municipalities that use this sewer pipe to limit their sewage use, affecting a total of approximately 1.2 million people in the 12 cities and towns. Inability to stop the flow has led to enlargement of the sinkhole, greatly hindering rescue operations.[4]
Yashio has amayor-council form of government with a directly elected mayor and aunicameral city council of 21 members. Yashio contributes one member to the Saitama Prefectural Assembly. In terms of national politics, the city is part ofSaitama 14th district of thelower house of theDiet of Japan.
Due to this location, Yashio is primarily a distribution center, with a number ofindustrial parks. It is alsobedroom community with part of its population commuting to the Tokyo metropolis for work.
Yashio has ten public elementary schools and five public middle schools operated by the city government, and two public high schools operated by the Saitama Prefectural Board of Education.
Metropolitan Intercity Railway Company -Tsukuba Express
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