Clarksburg is a city in Harrison County, West Virginia, United States, and its county seat. The population was 16,039 at the 2020 census, making it the tenth-most populous city in West Virginia. It is the principal city of the Clarksburg micropolitan area in North Central West Virginia, which had a population of 90,434 in 2020. Clarksburg was named National Small City of the Year in 2011 by the National League of Cities.
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