Dwight, IL has a population of 4,168 and is the 7,256th largest city in the United States. The population density is 1,277 per sq mi which is 474% higher than the Illinois average and 1309% higher than the national average. The median age in Dwight is 44 which is approximately 18% higher than the Illinois average of 37. In Dwight, 64% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 85% of Dwight residents were born in Illinois, 14% were born out of state, 0% were born outside of the United States and 1% were foreign born.