small city
Refers to a city that is small in size or population; often used in contrast to larger urban centers.
He chose to live in a small city rather than a big city.
町 is a more general term for 'town', often smaller and less formal than 小都市.
小都市 means a small city, the direct opposite in scale to 大都市, a major city.
Compound of 小 (small) and 都市 (city).