Langleyville, IL has a population of 316 and is the 22,212th largest city in the United States. The population density is 804 per sq mi which is 262% higher than the Illinois average and 788% higher than the national average. The median age in Langleyville is 48 which is approximately 28% higher than the Illinois average of 37. In Langleyville, 74% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 88% of Langleyville residents were born in Illinois, 12% were born out of state, 0% were born outside of the United States and 0% were foreign born.