what is not a reason for the increasing age of South Carolinians?

A decline in average life expectancy is not a reason for the increasing age of South Carolinians.

The increasing age of South Carolinians can be attributed to several factors. However, one reason that is not associated with the increasing age of South Carolinians is immigration. While immigration might impact the overall demographic composition of a region, in the case of South Carolina, it is not a significant contributor to the aging population. Other factors such as declining birth rates, increased longevity, and the aging of the baby boomer generation are more influential in this regard.