Over the last forty years, Butler County and the City of Morgantown have seen fluctuations in population. According to the US Census Bureau, the City of Morgantown is comprised of a population of 2,394 citizens as of 2010, a slight decrease from 2000. The City of Morgantown saw an increase of 1,000 people between 1970 and 2010. Over the same period, Butler County has grown from 9,723 citizens to 12,690.