Hartland, WI has a population of 9,195 and is the 4,194th largest city in the United States. The population density is 1,706 per sq mi which is 1851% higher than the Wisconsin average and 1783% higher than the national average. The median age in Hartland is 39 which is approximately 1% higher than the Wisconsin average of 39. In Hartland, 62% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 68% of Hartland residents were born in Wisconsin, 27% were born out of state, 2% were born outside of the United States and 4% were foreign born.