Plato, MN has a population of 313 and is the 22,271st largest city in the United States. The population density is 936 per sq mi which is 1413% higher than the Minnesota average and 933% higher than the national average. The median age in Plato is 40 which is approximately 6% higher than the Minnesota average of 38. In Plato, 69% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 86% of Plato residents were born in Minnesota, 11% were born out of state, 0% were born outside of the United States and 3% were foreign born.