Mattoon, WI has a population of 511 and is the 19,408th largest city in the United States. The population density is 312 per sq mi which is 257% higher than the Wisconsin average and 244% higher than the national average. The median age in Mattoon is 33 which is approximately 17% lower than the Wisconsin average of 39. In Mattoon, 60% of the population over 15 years of age are married, 75% speak English and 24% speak Spanish. 70% of Mattoon residents were born in Wisconsin, 13% were born out of state, 0% were born outside of the United States and 17% were foreign born.