Clear Lake, WI has a population of 957 and is the 15,425th largest city in the United States. The population density is 368 per sq mi which is 321% higher than the Wisconsin average and 306% higher than the national average. The median age in Clear Lake is 46 which is approximately 18% higher than the Wisconsin average of 39. In Clear Lake, 56% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 70% of Clear Lake residents were born in Wisconsin, 28% were born out of state, 0% were born outside of the United States and 2% were foreign born.