Ann Arbor, MI has a population of 118,087 and is the 236th largest city in the United States. The population density is 4,239 per sq mi which is 4103% higher than the Michigan average and 4579% higher than the national average. The median age in Ann Arbor is 28 which is approximately 30% lower than the Michigan average of 40. In Ann Arbor, 37% of the population over 15 years of age are married, 78% speak English and 3% speak Spanish. 48% of Ann Arbor residents were born in Michigan, 33% were born out of state, 1% were born outside of the United States and 18% were foreign born.