Colorado, United States·4K residents
Niwot is an unincorporated town, a post office, and a census-designated place (CDP) located in and governed by Boulder County, Colorado, United States. The CDP is a part of the Boulder, CO Metropolitan Statistical Area and the Front Range Urban Corridor. The Niwot post office has the ZIP Codes 80503 and 80544. At the United States Census 2020, the population of the Niwot CDP was 4,306.
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