East Peoria, IL has a population of 23,090 and is the 1,887th largest city in the United States. The population density is 1,146 per sq mi which is 416% higher than the Illinois average and 1165% higher than the national average. The median age in East Peoria is 43 which is approximately 14% higher than the Illinois average of 37. In East Peoria, 61% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 82% of East Peoria residents were born in Illinois, 15% were born out of state, 1% were born outside of the United States and 2% were foreign born.