Federal Dam, MN has a population of 79 and is the 27,442nd largest city in the United States. The population density is 42 per sq mi which is 33% lower than the Minnesota average and 54% lower than the national average. The median age in Federal Dam is 56 which is approximately 47% higher than the Minnesota average of 38. In Federal Dam, 67% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 80% of Federal Dam residents were born in Minnesota, 19% were born out of state, 0% were born outside of the United States and 1% were foreign born.