Saginaw, MI has a population of 49,892 and is the 818th largest city in the United States. The population density is 2,921 per sq mi which is 2796% higher than the Michigan average and 3124% higher than the national average. The median age in Saginaw is 36 which is approximately 10% lower than the Michigan average of 40. In Saginaw, 37% of the population over 15 years of age are married, 94% speak English and 4% speak Spanish. 79% of Saginaw residents were born in Michigan, 19% were born out of state, 1% were born outside of the United States and 2% were foreign born.