Newburgh’s zip codes are 47630 and, for P.O Boxes, 47629. The area code for most of southern Indiana is (812). Newburgh, located in the southwestern region of Indiana, in Ohio township, is in Warrick County. Warrick County is situated between the Kentucky border and Vanderburgh County. With a shoreline of approximately 10 miles on the Ohio River, Warrick borders Gibson, Pike, and Dubois Counties to its north with Little Pigeon Creek separating much of its eastern portion from Spencer County to the east. Evansville’s metropolitan area lies just west of Warrick County. Newburgh Schools are part of the Warrick County School Corporation which, in addition to Newburgh and the county seat Boonville, also serves smaller towns that include Chandler, Elberfeld, Lynnville, and Tennyson with a total of 17 schools, 10,211 enrolled students, with a student-to-teacher ratio of 17:1.