River Rouge, MI has a population of 7,609 and is the 4,879th largest city in the United States. The population density is 2,867 per sq mi which is 2742% higher than the Michigan average and 3064% higher than the national average. The median age in River Rouge is 35 which is approximately 11% lower than the Michigan average of 40. In River Rouge, 37% of the population over 15 years of age are married, 89% speak English and 10% speak Spanish. 82% of River Rouge residents were born in Michigan, 12% were born out of state, 0% were born outside of the United States and 5% were foreign born.