Which term describes the southern and southwestern regions of the U.S. that have seen population growth since the 1960s?

The term that describes the southern and southwestern regions of the U.S. that have experienced significant population growth since the 1960s is the Sun Belt. This region has attracted many people due to factors such as a warmer climate, lower cost of living, and growing job opportunities, particularly in industries such as technology, healthcare, and tourism. The Sun Belt encompasses states like Florida, Texas, Arizona, and California.

In contrast, the Rust Belt refers to areas in the northeastern and midwestern regions of the U.S. that experienced economic decline and population loss due to the decrease in manufacturing jobs. The Frost Belt generally refers to regions that see harsh winter weather and could be associated with colder states in the north. The Coral Belt does not have a specific context within demographic studies or regional economic shifts in the U.S. Thus, the growth trends and demographic changes identified with the Sun Belt uniquely characterize the southern and southwestern regions.