Danvers, IL has a population of 1,291 and is the 13,588th largest city in the United States. The population density is 1,509 per sq mi which is 579% higher than the Illinois average and 1566% higher than the national average. The median age in Danvers is 34 which is approximately 9% lower than the Illinois average of 37. In Danvers, 64% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 85% of Danvers residents were born in Illinois, 13% were born out of state, 1% were born outside of the United States and 2% were foreign born.