Delhi, LA has a population of 2,938 and is the 8,915th largest city in the United States. The population density is 998 per sq mi which is 1025% higher than the Louisiana average and 1002% higher than the national average. The median age in Delhi is 40 which is approximately 9% higher than the Louisiana average of 36. In Delhi, 56% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 84% of Delhi residents were born in Louisiana, 15% were born out of state, 1% were born outside of the United States and 0% were foreign born.