
National Harbor
- County:
- Prince George's County
- County Seat:
- No
- Area (mi²):
- 1.274
- State:
- Maryland
National Harbor is a CDP located in Prince George's County, Maryland. National Harbor has a 2025 population of 4,388. National Harbor is currently growing at a rate of 0.92% annually and its population has increased by 9.75% since the most recent census, which recorded a population of 3,998 in 2020.
The average household income in National Harbor is $146,021 with a poverty rate of 6.46%. The median age in National Harbor is 49.8 years: 49.4 years for males, and 50.4 years for females.