Dunkirk, IN has a population of 2,365 and is the 10,069th largest city in the United States. The population density is 1,882 per sq mi which is 940% higher than the Indiana average and 1977% higher than the national average. The median age in Dunkirk is 37 which is approximately 1% lower than the Indiana average of 37. In Dunkirk, 49% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 84% of Dunkirk residents were born in Indiana, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.