Ichinomiya, Chiba
town in Chōsei district, Chiba prefecture, Japan
Ichinomiya (一宮町, Ichinomiya-machi) is a town located in Chiba Prefecture, Japan. As of 31 December 2020, the town had an estimated population of 12,494 in 5643 households and a population density of 540 persons per km2. The total area of the town is 65.38 square kilometres (25.24 sq mi).
Geography
Ichinomiya is located in the eastern part of Chiba prefecture, about 35 kilometers from the prefectural capital at Chiba and 60 to 70 kilometers from central Tokyo.
Facing the Pacific Ocean coast of central Bōsō Peninsula, the eastern part of the town includes a section of the popular Kujūkuri Beach, whereas the western part is in the Bōsō Hill Range with long and deep valleys extend into the forest, and there are scattered ponds for agricultural water.The Ichinomiya River crosses the north from east to west and flows into the Pacific Ocean. The highest elevations in the town are at Mount Shiroyama 150 metres (490 ft), a former castle site, Mount Takafuji 83 metres (272 ft), and Mount Gundari 70 metres (230 ft).
Neighboring municipalities
Chiba Prefecture
Chōsei
Isumi
Mutsuzawa
Climate
Ichinomiya has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Ichinomiya is 15.4 °C. The average annual rainfall is 1717 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.0 °C, and lowest in January, at around 5.8 °C.
Demographics
Per Japanese census data, the population of Ichinomiya remained relatively steady over the past 70 years.
History
The area of present-day Ichinomiya has been inhabited since prehistoric times.
This brief starts where responsible research should: with the source description of “Ichinomiya, Chiba” as town in Chōsei district, Chiba prefecture, Japan. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as town in Chōsei district, Chiba prefecture, Japan. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q1203602. VIAF identifies the subject as 259326832. The Library of Congress control number is n85343655. Authority coordinates are 35.373, 140.369. 4 of 6 selected statements include explicit references; 1 carry qualifiers and 1 use preferred rank. The first chronological checks are 2020 and 1717.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. 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
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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 “Ichinomiya, Chiba”, its source revision and the description used here.
- Expand the search: follow Ichinomiya, Chiba primary sources, Ichinomiya, Chiba archive and Ichinomiya research across catalogues and specialist indexes.
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Questions for further research
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This entry incorporates text from “Ichinomiya, Chiba” 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.