Ōta, Gunma
city in Gunma Prefecture, Japan
Ōta (太田市, Ōta-shi) is a city located in Gunma Prefecture, Japan. As of 31 August 2020, the city had an estimated population of 224,358 in 109,541 households, and a population density of 1300 persons per km2. The total area of the city is 60.97 square kilometres (23.54 sq mi).
Geography
Ōta is located in the extreme southeastern portion of Gunma Prefecture in the northern Kantō Plains, bordered by Tochigi Prefecture to the east and Saitama Prefecture to the south. The city is located 80 kilometres (50 mi) northwest of Tokyo between the Tone and Watarase rivers. It is located about 80 kilometers northwest of central Tokyo, about 30 kilometers east of the prefectural capital at Maebashi, about 40 kilometers east of Takasaki.
The elevation of the city ranges from 30 to 40 meters in lowland in the south, southwest, northeast, and east, to 40–70 meters in the northwest.
Surrounding municipalities
Gunma Prefecture
Isesaki
Kiryū
Midori
Ōizumi
Ōra
Tochigi Prefecture
Ashikaga
Saitama Prefecture
Fukaya
Kumagaya
Climate
Ōta has a Humid continental climate (Köppen Cfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Ōta is 14.4 °C. The average annual rainfall is 1260 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.7 °C, and lowest in January, at around 3.5 °C.
Demographics
Per Japanese census data, the population of Ōta has increased steadily over the past 60 years.
“Ōta, Gunma” enters the record as city in Gunma Prefecture, Japan. Crown Archives preserves that source wording while asking what Gunma, city and Prefecture can confirm, complicate or overturn.
Why this record matters
“Ōta, Gunma” is worth following because a concise public description often conceals a longer documentary argument. Here, Gunma, city and Prefecture provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q386179. VIAF identifies the subject as 254402592. The Library of Congress control number is n81126029. Authority coordinates are 36.291, 139.375. 2 of 7 selected statements include explicit references; 1 carry qualifiers and 1 use preferred rank. The first chronological checks are 2020, 1300 and 1260.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Ōta, Gunma”, its source revision and the description used here.
- Expand the search: follow Ōta, Gunma primary sources, Ōta, Gunma archive and Gunma research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Ōta, Gunma”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Ōta, Gunma” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.