town area; neighborhood; most specific part of an address
Used in postal and administrative contexts to refer to the smallest named division within a municipality, often the part of an address after the city/ward and before the block number. Also used more generally for a neighborhood or district.
This postal code is assigned to each town area.
Garbage collection days differ by neighborhood.
Compound of 町 (town) and 域 (area, region). The reading ちょういき follows standard on'yomi.