Clear Lake is a city in Cerro Gordo County, Iowa, United States. The population was 7,687 at the 2020 census. The city is named for the l…Clear Lake is a city in Cerro Gordo County, Iowa, United States. The population was 7,687 at the 2020 census. The city is named for the large lake on which it is located. It is the home of a number of marinas, state parks and tourism-related businesses. Clear Lake is also a major stop on Interstate 35 with many restaurants, hotels and truck stops.
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