Big Rapids, MI has a population of 10,495 and is the 3,804th largest city in the United States. The population density is 2,399 per sq mi which is 2279% higher than the Michigan average and 2548% higher than the national average. The median age in Big Rapids is 22 which is approximately 44% lower than the Michigan average of 40. In Big Rapids, 20% of the population over 15 years of age are married, 94% speak English and 1% speak Spanish. 79% of Big Rapids residents were born in Michigan, 16% were born out of state, 0% were born outside of the United States and 5% were foreign born.