The Elijah Iles House is a historic house at 628 S. 7th Street in Springfield, Illinois. Built circa 1837, the house has survived nearly intact for 182 years and is the oldest such structure in Springfield. Iles, who moved to Springfield in 1821, was one of the city's earliest settlers. He ran the first store in Sangamon County and helped persuade the county to locate the county seat in Springfield. His house has a Greek Revival design inspired by Southern architecture. It is one of the few Greek Revival residences in Central Illinois. A timber-framed structure on a raised brick foundation, it has three levels: a ground-level basement, the main floor, and a finished attic which provided sleeping quarters.