urban area; built-up area; town area
Refers to a developed, densely built-up part of a city or town, as opposed to rural or suburban outskirts. Often used in planning, disaster prevention, and real estate contexts.
You need to be careful when driving in urban areas.
この辺りは昔は田んぼだったが、今はすっかり市街地になった。
This area used to be rice paddies, but now it has completely become a built-up area.
This road passes through the urban area.
The urban area spreads out around the station.
When we entered the urban area by car, there was traffic congestion.
He built his house in a place away from the urban area.