Lowell, OH has a population of 532 and is the 19,177th largest city in the United States. The population density is 2,335 per sq mi which is 807% higher than the Ohio average and 2477% higher than the national average. The median age in Lowell is 38 which is approximately 5% lower than the Ohio average of 39. In Lowell, 59% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 82% of Lowell residents were born in Ohio, 16% were born out of state, 1% were born outside of the United States and 1% were foreign born.