Niles, MI has a population of 11,379 and is the 3,565th largest city in the United States. The population density is 1,965 per sq mi which is 1848% higher than the Michigan average and 2069% higher than the national average. The median age in Niles is 35 which is approximately 11% lower than the Michigan average of 40. In Niles, 49% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 58% of Niles residents were born in Michigan, 39% were born out of state, 0% were born outside of the United States and 3% were foreign born.