Oldtown is a city in Bonner County, Idaho and suburb of Newport, Washington, with a population of 184 at the 2010 census. It is located on the Pend Oreille River, just east of Newport. There are no natural or physical barriers, and it is strictly a political division, separated by the straight-line state boundary. Oldtown is squeezed between this boundary to the west and the river to the east, leaving the main business district on U.S. Route 2 with only 700 feet of space in which to operate on the Idaho side.