With a 64% increase in population from 1990 -2000, Greer is one of the fastest growing cities in the state of South Carolina. Greer is conveniently located along I-85, and is situated on the county line for Greenville and Spartanburg counties. The Greenville-Spartanburg International Airport is located in Greer, helping to make it one of the most accessible communities in the Upstate of South Carolina.