What do you call a modern residential area situated on the outskirts of a settlement?

A modern residential area situated on the outskirts of a settlement is referred to as a suburb. Suburbs are typically characterized by lower population density compared to urban centers and offer a mix of residential homes, parks, and some commercial areas. They are often designed to provide a more spacious living environment, making them attractive to families seeking a quieter lifestyle while still being within reach of city amenities.

In contrast, a "new housing zone" might refer to any newly developed residential area, but it does not specifically denote the context of being on the perimeter of an existing urban center. A "rural area" indicates a more sparsely populated region often associated with agriculture or natural landscapes, rather than a modern residential setting. An "urban area" describes a densely populated city or town environment, not the suburban nature of the area in question. Therefore, suburb is the most accurate term to describe a modern residential area located on the outskirts of a settlement.