Lake Charles, LA has a population of 75,044 and is the 472nd largest city in the United States. The population density is 1,782 per sq mi which is 1909% higher than the Louisiana average and 1867% higher than the national average. The median age in Lake Charles is 34 which is approximately 6% lower than the Louisiana average of 36. In Lake Charles, 46% of the population over 15 years of age are married, 92% speak English and 3% speak Spanish. 78% of Lake Charles residents were born in Louisiana, 18% were born out of state, 1% were born outside of the United States and 3% were foreign born.