Cadillac, MI has a population of 10,380 and is the 3,844th largest city in the United States. The population density is 1,378 per sq mi which is 1266% higher than the Michigan average and 1421% higher than the national average. The median age in Cadillac is 38 which is approximately 3% lower than the Michigan average of 40. In Cadillac, 57% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 86% of Cadillac residents were born in Michigan, 12% were born out of state, 1% were born outside of the United States and 1% were foreign born.