Isanti, MN has a population of 5,453 and is the 6,102nd largest city in the United States. The population density is 1,200 per sq mi which is 1840% higher than the Minnesota average and 1225% higher than the national average. The median age in Isanti is 32 which is approximately 17% lower than the Minnesota average of 38. In Isanti, 52% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 86% of Isanti residents were born in Minnesota, 13% were born out of state, 1% were born outside of the United States and 0% were foreign born.