Haynesville, LA has a population of 2,684 and is the 9,399th largest city in the United States. The population density is 556 per sq mi which is 527% higher than the Louisiana average and 514% higher than the national average. The median age in Haynesville is 35 which is approximately 2% lower than the Louisiana average of 36. In Haynesville, 49% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 81% of Haynesville residents were born in Louisiana, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.