Lonsdale, MN has a population of 3,814 and is the 7,659th largest city in the United States. The population density is 1,446 per sq mi which is 2237% higher than the Minnesota average and 1496% higher than the national average. The median age in Lonsdale is 29 which is approximately 22% lower than the Minnesota average of 38. In Lonsdale, 65% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 80% of Lonsdale residents were born in Minnesota, 20% were born out of state, 0% were born outside of the United States and 0% were foreign born.