Three Lakes, WI has a population of 466 and is the 19,974th largest city in the United States. The population density is 165 per sq mi which is 89% higher than the Wisconsin average and 82% higher than the national average. The median age in Three Lakes is 63 which is approximately 60% higher than the Wisconsin average of 39. In Three Lakes, 81% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 64% of Three Lakes residents were born in Wisconsin, 35% were born out of state, 0% were born outside of the United States and 1% were foreign born.