Edwardsville, IL has a population of 25,044 and is the 1,725th largest city in the United States. The population density is 1,263 per sq mi which is 468% higher than the Illinois average and 1294% higher than the national average. The median age in Edwardsville is 30 which is approximately 20% lower than the Illinois average of 37. In Edwardsville, 47% of the population over 15 years of age are married, 94% speak English and 1% speak Spanish. 63% of Edwardsville residents were born in Illinois, 31% were born out of state, 1% were born outside of the United States and 5% were foreign born.