Bradford, IL has a population of 657 and is the 17,851st largest city in the United States. The population density is 1,649 per sq mi which is 642% higher than the Illinois average and 1720% higher than the national average. The median age in Bradford is 44 which is approximately 17% higher than the Illinois average of 37. In Bradford, 60% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 88% of Bradford residents were born in Illinois, 12% were born out of state, 0% were born outside of the United States and 0% were foreign born.