town area; urban area; metropolitan area; built-up area
市街地は交通量が多い。
The urban area has heavy traffic.
市街地に新しい商業施設ができた。
A new commercial facility was built in the urban area.
市街地を離れると田んぼが広がる静かな風景になる。
Once you leave the urban area, a quiet landscape of rice paddies spreads out.