Robbins, IL has a population of 5,216 and is the 6,272nd largest city in the United States. The population density is 3,600 per sq mi which is 1519% higher than the Illinois average and 3874% higher than the national average. The median age in Robbins is 37 which is approximately 1% lower than the Illinois average of 37. In Robbins, 31% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 84% of Robbins residents were born in Illinois, 14% were born out of state, 0% were born outside of the United States and 2% were foreign born.