If you’re about to pick up your rental car but don’t know all that much about Koloa, don’t stress. Here are some key details to help you get started.This town sits 12 miles to the southwest of Wailua Homesteads, and 4,909 miles west of Washington, the nation’s capital.If you’re looking to meet some friendly folks while you’re in this part of Kauai County, you shouldn’t have too much trouble. About 2,100 people live here.