171-8523 Postcode — Nishiikebukuro, Tokyo To

Postal code 171-8523 covers Nishiikebukuro, Tokyo To. A Japanese postal code is seven digits, written with a hyphen after the third. The figures below describe the municipality this code falls in — Japan publishes by municipality, not by postal code.

Municipality: Toshima
In Japanese: 豊島区
Residents: 297,954
Population density: 22,901.9 /km²
Prefecture: Tokyo To

Where 171-8523 is

Toshima, Tokyo To — the point recorded for this postal code. It marks the centre of the code, not its boundary.

People

Residents	297,954
Population density	22,901.9 /km²

Where this code is

Municipality	Toshima
In Japanese	豊島区
Prefecture	Tokyo To
Area	13.01 km²

Population and area by municipality, from Wikidata under CC0, joined to postal codes through the dantai code. GeoNames romanises Japanese place names and Japan's own statistics are keyed in kanji, so the join is by name within a prefecture rather than by a shared identifier. Figures describe the whole municipality, not the postal code.