Romeo, MI has a population of 3,919 and is the 7,538th largest city in the United States. The population density is 1,934 per sq mi which is 1818% higher than the Michigan average and 2035% higher than the national average. The median age in Romeo is 40 which is approximately 2% higher than the Michigan average of 40. In Romeo, 60% of the population over 15 years of age are married, 89% speak English and 9% speak Spanish. 81% of Romeo residents were born in Michigan, 13% were born out of state, 0% were born outside of the United States and 6% were foreign born.