Irwin County Georgia has 3 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Davis, Jefferson, Capture Site and Irwin County Courthouse, Ocilla Public School.
Some of the country's most noteable architects helped create the Irwin County places including Fall City Construction Co. and Lauren Parrott. Prominent architectural styles found in Irwin Country are Classical Revival, Colonial Revival and International Style.