Haynesville is a town in northern Claiborne Parish, Louisiana, United States, located just south of the Arkansas border. The population was 2,327 at the 2010 census.Haynesville is known as the "Gateway to North Louisiana" and the "Butterfly Capital of Louisiana". Loice Kendrick-Lacy of Haynesville published Gardening To Attract Butterflies: The Beauty And The Beast. Kendrick-Lacy begins with memories of her childhood, when she was introduced to butterflies by her grandmother.