High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Lowell is a village in Washington County, Ohio, United States, along the Muskingum River. The population was 628 at the 2000 census. Lowell is the third-oldest settlement in the Northwest Territory, after Marietta, Ohio and Belpre, Ohio. According to the United States Census Bureau, the village has a total area of 0.2 square miles (0.6 km2), all of it land. State Routes 60 and 530 connect in Lowell.