Youngsville is a city in Lafayette Parish, Louisiana, United States, and is part of the Lafayette Metropolitan Statistical Area. The population was 8,105 as of the 2010 census and an estimated 14,077 in 2018.Youngsville was the birthplace of the colorful Louisiana businessman and politician Dudley J. LeBlanc, the entrepreneur of the Hadacol fortune of the 1950s. Bernard LeBas of Ville Platte has represented Evangeline and St. Landry parishes in the... Show more

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