Bunker Hill, IL has a population of 1,730 and is the 11,881st largest city in the United States. The population density is 1,372 per sq mi which is 517% higher than the Illinois average and 1415% higher than the national average. The median age in Bunker Hill is 46 which is approximately 23% higher than the Illinois average of 37. In Bunker Hill, 56% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 80% of Bunker Hill residents were born in Illinois, 18% were born out of state, 1% were born outside of the United States and 1% were foreign born.