Milan, OH has a population of 1,263 and is the 13,721st largest city in the United States. The population density is 1,066 per sq mi which is 314% higher than the Ohio average and 1077% higher than the national average. The median age in Milan is 44 which is approximately 12% higher than the Ohio average of 39. In Milan, 57% of the population over 15 years of age are married, 94% speak English and 2% speak Spanish. 79% of Milan residents were born in Ohio, 17% were born out of state, 1% were born outside of the United States and 3% were foreign born.