Allen Park, MI has a population of 27,519 and is the 1,563rd largest city in the United States. The population density is 3,934 per sq mi which is 3801% higher than the Michigan average and 4243% higher than the national average. The median age in Allen Park is 43 which is approximately 8% higher than the Michigan average of 40. In Allen Park, 61% of the population over 15 years of age are married, 92% speak English and 4% speak Spanish. 82% of Allen Park residents were born in Michigan, 13% were born out of state, 1% were born outside of the United States and 4% were foreign born.