Lima, IL has a population of 121 and is the 26,369th largest city in the United States. The population density is 636 per sq mi which is 186% higher than the Illinois average and 602% higher than the national average. The median age in Lima is 34 which is approximately 8% lower than the Illinois average of 37. In Lima, 75% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 71% of Lima residents were born in Illinois, 28% were born out of state, 0% were born outside of the United States and 1% were foreign born.