What do we call modern housing suburbs that are located further away from the city?

The term for modern housing suburbs that are located further away from the city is "Exurban Areas." These areas are characterized by residential zones that are situated beyond the suburbs of a city, typically in more rural settings, but still have connections to the urban center. Exurban areas often provide a quieter lifestyle while still allowing residents to commute to the city for work or access urban amenities.

When considering the other terms, "Urban Density" refers to the population concentration within urban areas and does not specifically indicate distance from a city. The "Suburban Ring" might seem relevant but generally refers to the development pattern of suburbs surrounding a city rather than those that are farther away. "Rural Outskirts" typically describes regions that are on the edge of urban development but does not specifically imply the characteristics of modern housing found in exurban areas. Therefore, exurban areas accurately capture the essence of modern residential communities that are more distanced from the urban core.