Chiba
First-level unit, Japan: people, area, the units inside and neighbours, with risk values when released.
Inside Chiba
The 55 ADM2 units of Chiba.
People, area and density
Source observations from open grids summed inside the boundary; not index values.
5,435,169
4.7% of Japan.
5,787,060
+6% against GHSL; the two grids differ in method.
5,162 km²
1,053 people per km².
JP-12
Subdivision code as carried by the boundary source.
1,518,027
people on land at or below 10 m, 27.9% of the unit (GEBCO 2024 and GHSL 2025).
55 units inside Chiba
Each unit has its own page.
Boundary licences: Open Data Commons Open Database License 1.0 · Creative Commons Attribution-ShareAlike 2.0.
| Unit | कोड | People (GHSL) | People (WorldPop) | Area km² | Per km² | Share | Coast ≤ 10 m |
|---|---|---|---|---|---|---|---|
| ????? | – | 466 | 284 | 0.11 | 4,236 | 0% | 0 |
| Abiko | – | 130,560 | 136,592 | 43.27 | 3,017 | 2.3% | 59,419 |
| Asahi | – | 62,337 | 55,288 | 130.16 | 479 | 1.1% | 48,640 |
| Chiba | – | 890,673 | 932,217 | 271.7 | 3,278 | 15.5% | 195,580 |
| Chonan | – | 7,960 | 5,903 | 65.36 | 122 | 0.1% | 0 |
| Chosei | – | 11,948 | 10,431 | 28.24 | 423 | 0.2% | 0 |
| Choshi | – | 49,584 | 37,800 | 84.1 | 590 | 0.9% | 17,515 |
| Funabashi | – | 431,256 | 511,423 | 86.28 | 4,998 | 7.5% | 57,880 |
| Futtsu | – | 68,668 | 60,680 | 206 | 333 | 1.2% | 26,392 |
| Ichihara | – | 303,033 | 311,334 | 367.62 | 824 | 5.3% | 125,496 |
| Ichikawa | – | 434,929 | 488,747 | 57.05 | 7,624 | 7.6% | 311,196 |
| Ichinomiya | – | 12,241 | 12,241 | 23.23 | 527 | 0.2% | 7,825 |
| Inzai | – | 88,155 | 104,764 | 123.81 | 712 | 1.5% | 37,569 |
| Isumi | – | 40,354 | 33,708 | 157.6 | 256 | 0.7% | 8,437 |
| Kamagaya | – | 111,378 | 127,536 | 20.96 | 5,314 | 1.9% | 0 |
| Kamogawa | – | 32,643 | 27,838 | 191.06 | 171 | 0.6% | 1,738 |
| Kashiwa | – | 346,191 | 404,016 | 115.17 | 3,006 | 6% | 24,243 |
| Katori | – | 73,570 | 60,316 | 262.25 | 281 | 1.3% | 16,956 |
| Katsuura | – | 9,644 | 6,854 | 94.17 | 102 | 0.2% | 47 |
| Kimitsu | – | 49,473 | 63,753 | 318.76 | 155 | 0.9% | 1,279 |
| Kisarazu | – | 106,020 | 122,522 | 138.93 | 763 | 1.8% | 44,323 |
| Kozaki | – | 7,736 | 5,633 | 19.81 | 391 | 0.1% | 2,579 |
| Kujukuri | – | 18,356 | 12,784 | 24.46 | 750 | 0.3% | 16,701 |
| Kyonan | – | 1,662 | 1,384 | 45 | 37 | 0% | 0 |
| Matsudo | – | 534,502 | 601,903 | 61.38 | 8,708 | 9.3% | 99,038 |
| Minamibouso | – | 18,761 | 15,603 | 230.29 | 81 | 0.3% | 673 |
| Mobara | – | 106,475 | 94,653 | 100.21 | 1,063 | 1.9% | 62,869 |
| Mutsuzawa | – | 12,200 | 10,775 | 35.59 | 343 | 0.2% | 4,023 |
| Nagara | – | 7,718 | 5,863 | 47 | 164 | 0.1% | 0 |
| Nagareyama | – | 121,875 | 146,003 | 35.15 | 3,467 | 2.1% | 5,735 |
| Narashino | – | 183,446 | 219,761 | 20.7 | 8,862 | 3.2% | 76,256 |
| Narita | – | 75,172 | 73,285 | 214.05 | 351 | 1.3% | 14,230 |
| Noda | – | 163,620 | 171,086 | 103.8 | 1,576 | 2.8% | 54,180 |
| Oamishirasato | – | 28,846 | 28,846 | 58.16 | 496 | 0.5% | 17,194 |
| Onjuku | – | 9,353 | 6,510 | 24.85 | 376 | 0.2% | 330 |
| Otaki | – | 6,677 | 4,823 | 129.92 | 51 | 0.1% | 0 |
| Sakae | – | 9,278 | 7,741 | 32.51 | 285 | 0.2% | 3,020 |
| Sakura | – | 130,662 | 127,633 | 103.39 | 1,264 | 2.3% | 24,601 |
| Sanmu | – | 47,174 | 38,039 | 146.76 | 321 | 0.8% | 20,207 |
| Shibayama | – | 20,286 | 19,572 | 42.88 | 473 | 0.4% | 303 |
| Shirako | – | 10,681 | 9,325 | 27.6 | 387 | 0.2% | 9,717 |
| Shiroi | – | 126,586 | 142,047 | 35.09 | 3,607 | 2.2% | 4,161 |
| Shisui | – | 24,015 | 25,126 | 19.02 | 1,263 | 0.4% | 2,637 |
| Sodegaura | – | 42,815 | 51,600 | 94.62 | 452 | 0.7% | 14,055 |
| Sousa | – | 28,882 | 23,314 | 101.7 | 284 | 0.5% | 20,802 |
| Tako | – | 19,706 | 16,263 | 72.93 | 270 | 0.3% | 4,898 |
| Tateyama | – | 47,872 | 37,710 | 110.56 | 433 | 0.8% | 6,960 |
| Tomisato | – | 75,283 | 86,731 | 53.87 | 1,397 | 1.3% | 3,366 |
| Toogane | – | 80,649 | 71,826 | 89.23 | 904 | 1.4% | 43,573 |
| Toonosho | – | 16,170 | 13,131 | 45.96 | 352 | 0.3% | 7,824 |
| Urayasu | – | 74,394 | 67,968 | 19.21 | 3,873 | 1.3% | 25,965 |
| Yachimata | – | 60,261 | 54,222 | 75.43 | 799 | 1% | 0 |
| Yachiyo | – | 265,142 | 305,004 | 51.39 | 5,159 | 4.6% | 12,863 |
| Yokoshibahikari | – | 30,722 | 26,620 | 66.93 | 459 | 0.5% | 22,120 |
| Yotsukaido | – | 74,347 | 89,068 | 34.79 | 2,137 | 1.3% | 0 |
Open exposure layers
Count of H3 resolution-3 cells whose centre falls in the unit and that carry each Natural Earth layer.
- Urban areas
- 18,720 H3 cells
- Ports
- 3 H3 cells
- Airports
- 2 H3 cells
- Major roads
- 644.2 H3 cells
- Railways
- 695.5 H3 cells
- Rivers and lakes
- 128.4 H3 cells
Risk values
Sources, credits and licences
- ADM1 boundaries
- geoBoundaries (William & Mary geoLab), gbOpen JPN ADM1, source: OpenStreetMap, Wambacher © OpenStreetMap contributors, licence: Open Data Commons Open Database License 1.0 (share-alike: this boundary layer is offered under the same licence) · source · represents 2017. Offered under the same licence (Open Data Commons Open Database License 1.0), kept as its own layer and not merged into other data.
- ADM2 boundaries
- geoBoundaries (William & Mary geoLab), gbOpen JPN ADM2, source: OpenStreetMap, Wambacher © OpenStreetMap contributors, licence: Creative Commons Attribution-ShareAlike 2.0 (share-alike: this boundary layer is offered under the same licence) · source · represents 2017. Offered under the same licence (Creative Commons Attribution-ShareAlike 2.0), kept as its own layer and not merged into other data.
- Basemap
- OpenFreeMap © OpenMapTiles (CC BY 4.0) · data © OpenStreetMap contributors (ODbL 1.0). Vector tiles requested by the reader’s browser, unmodified; the map falls back to plain land and sea when the host does not answer.
- Terrain
- Terrain Tiles (Mapzen, AWS Open Data), compiled from SRTM and other public elevation sources (NASA, USGS, ETOPO1, GMTED, EU-DEM under the Copernicus programme, Geoscience Australia, Kartverket, INEGI, LINZ, data.gov.uk). Display relief, not survey data.
- People
- GHSL 2025 population grid, European Commission Joint Research Centre (CC BY 4.0), shown at 0.05° and summed per unit; WorldPop 2025 (CC BY 4.0) as a second estimate. Units smaller than a grid cell take the density of the cell under them.
- देश
- Natural Earth (public domain).
- Elevation
- GEBCO Compilation Group (2024) GEBCO 2024 Grid (public domain), reduced to 0.05°: the share of each cell’s land at or below 10 m, weighted by GHSL 2025 people for the low coastal zone.
- Position
- Boundaries are shown for location only and take no position on any boundary, name or status.
स्थिती
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Institutions and sources
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Avis en français
La méthodologie et les définitions du NXS-GRX sont un projet de travail préparatoire (2026). Le NXS-GRX est une information de recherche et d’analyse des risques : ni notation, ni indice de référence financier, ni statistique officielle, ni alerte, ni conseil. Les classes de risque sont des bandes sur une échelle publiée, non des classements.