Twin Valley, MN has a population of 723 and is the 17,264th largest city in the United States. The population density is 846 per sq mi which is 1267% higher than the Minnesota average and 833% higher than the national average. The median age in Twin Valley is 41 which is approximately 8% higher than the Minnesota average of 38. In Twin Valley, 61% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 64% of Twin Valley residents were born in Minnesota, 36% were born out of state, 0% were born outside of the United States and 0% were foreign born.