Forest Hills, MI has a population of 27,667 and is the 1,551st largest city in the United States. The population density is 562 per sq mi which is 457% higher than the Michigan average and 520% higher than the national average. The median age in Forest Hills is 41 which is approximately 4% higher than the Michigan average of 40. In Forest Hills, 73% of the population over 15 years of age are married, 92% speak English and 2% speak Spanish. 66% of Forest Hills residents were born in Michigan, 26% were born out of state, 1% were born outside of the United States and 7% were foreign born.