Newport is a city in and the county seat of Pend Oreille County, Washington, United States. The population was 2,114 at the 2020 ce…Newport is a city in and the county seat of Pend Oreille County, Washington, United States. The population was 2,114 at the 2020 census. Newport was given its name in 1890 due to its selection as a landing site for the first steamboat on the Pend Oreille River. Newport was officially incorporated on April 13, 1903. The first river bridge was built in 1906, and was replaced in 1926, and again in 1988.