Mahomet, IL has a population of 7,996 and is the 4,678th largest city in the United States. The population density is 856 per sq mi which is 285% higher than the Illinois average and 845% higher than the national average. The median age in Mahomet is 38 which is approximately 1% higher than the Illinois average of 37. In Mahomet, 67% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 69% of Mahomet residents were born in Illinois, 26% were born out of state, 1% were born outside of the United States and 4% were foreign born.