Clarks Grove, MN has a population of 596 and is the 18,474th largest city in the United States. The population density is 1,051 per sq mi which is 1598% higher than the Minnesota average and 1060% higher than the national average. The median age in Clarks Grove is 47 which is approximately 24% higher than the Minnesota average of 38. In Clarks Grove, 59% of the population over 15 years of age are married, 86% speak English and 3% speak Spanish. 69% of Clarks Grove residents were born in Minnesota, 19% were born out of state, 0% were born outside of the United States and 12% were foreign born.