ChapinGirl it's never too late. I found this nugget of data to help with your question.
DEMOGRAPHICS -- A Central Midlands Council of Governments Demographic Summary Report, using Applied Geographic Solutions data source, reveals the following population information:
Within a five-mile radius around Chapin, (78.49 square miles) there was a population of 7,755 in 1990 and 11,351 in 2001. Within a 10-mile ring (313.96 square miles), the population was 28,735 in 1990 and 40,027 in 2001. Within a 15-mile ring (706.4 square miles), the population was 88,858 in 1990 and 125,765 in 2001.
Per Capita Income in 2001 was $26,599 within a five-mile radius from the center of Chapin; $25,886 within a 10-mile radius; and $24,605 within a 15-mile radius. Median household income was $55,661 within five miles; $53,594 within 10 miles; and $53,290 within 15 miles.
According to the 2000 Census, the incorporated limits of the Town of Chapin had a population of 628. The census counted 249 occupied housing units within the town. Per capita income was $24,124. Median household income within the town limits was $48,750.
Contact Town Hall at 803-345-2444 for additional demographic information.