Davis Junction, IL has a population of 2,439 and is the 9,984th largest city in the United States. The population density is 576 per sq mi which is 159% higher than the Illinois average and 535% higher than the national average. The median age in Davis Junction is 32 which is approximately 15% lower than the Illinois average of 37. In Davis Junction, 64% of the population over 15 years of age are married, 87% speak English and 11% speak Spanish. 79% of Davis Junction residents were born in Illinois, 14% were born out of state, 1% were born outside of the United States and 6% were foreign born.