Morris, IL has a population of 13,930 and is the 3,000th largest city in the United States. The population density is 1,416 per sq mi which is 537% higher than the Illinois average and 1462% higher than the national average. The median age in Morris is 40 which is approximately 6% higher than the Illinois average of 37. In Morris, 60% of the population over 15 years of age are married, 91% speak English and 8% speak Spanish. 78% of Morris residents were born in Illinois, 17% were born out of state, 0% were born outside of the United States and 4% were foreign born.