Bellevue, OH has a population of 8,059 and is the 4,655th largest city in the United States. The population density is 1,335 per sq mi which is 364% higher than the Ohio average and 1374% higher than the national average. The median age in Bellevue is 37 which is approximately 5% lower than the Ohio average of 39. In Bellevue, 59% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 85% of Bellevue residents were born in Ohio, 13% were born out of state, 0% were born outside of the United States and 2% were foreign born.