Lanham, MD has a population of 10,219 and is the 3,881st largest city in the United States. The population density is 2,897 per sq mi which is 511% higher than the Maryland average and 3097% higher than the national average. The median age in Lanham is 37 which is approximately 3% lower than the Maryland average of 38. In Lanham, 47% of the population over 15 years of age are married, 64% speak English and 23% speak Spanish. 27% of Lanham residents were born in Maryland, 42% were born out of state, 1% were born outside of the United States and 30% were foreign born.