Newport is a census-designated place in eastern Newport Township, Washington County, Ohio, United States. It has a post office with the ZIP code 45768. Newport lies along the Ohio River several miles above the county seat of Marietta. Today its main street is designated as State Route 7. The population of the CPD was 895 at the 2020 census. Newport is the location of the Carpenter Bridge, which carries State Route 807 over the Ohio River.