Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/NATIONAL-HARBOR

National Harbor ZIP codes, Maryland

No ZIP code is named for National Harbor, MD; addresses there use a neighbouring town's name. 2 ZIP codes cover it: 20744 and 20745. Its area codes are 240, 301 and 227.

USPS city name
0 ZIP codes
Overlapping the city
2 more
Population
4,454
Area codes
240, 301, 227

NANPA lists no telephone rate centre for National Harbor itself, so these are the area codes of the nearest one, Waldorf (8.1 miles). A town on an area-code boundary can differ from its neighbour.

National Harbor in numbers

About 4,454 people live in National Harbor, in 2,343 households. The median household income is $109,707 a year, 6% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $472,500 (13% above the Maryland median), and median gross rent is $2,271 a month. The median age is 48.6; 55.1% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 35 minutes.

Population4,454National Harbor4,454
Households2,343National Harbor2,343
Median age48.6National Harbor48.6Maryland39.4US 38.9
Median household income$109,707National Harbor$109,707Maryland$103,678US $80,734
Median home value$472,500National Harbor$472,500Maryland$419,900US $332,700
Median gross rent$2,271National Harbor$2,271Maryland$1,705US $1,413
Bachelor's degree or higher55.1%National Harbor55.1%Maryland43.4%US 35.7%
Mean commute35.0 minNational Harbor35.0 minMaryland31.1 minUS 26.4 min
Population density3,496 / sq miNational Harbor3,496 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place National Harbor CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering National Harbor

These ZIP codes cover part of National Harbor but are addressed as somewhere else.

ZIP codes overlapping National Harbor
ZIP City Type Population Median income Median home
20744 Fort Washington , MD Standard 54,441 $124,190 $439,400
20745 Oxon Hill , MD Standard 28,605 $75,236 $375,700

Map of National Harbor ZIP codes

2074420745

The ZIP codes of National Harbor, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near National Harbor

The nearest larger towns are Oxon Hill (17,893 people, 2.0 mi), Belle Haven, VA (6,570 people, 2.7 mi) and Friendly (11,119 people, 2.7 mi).

Towns near National Harbor
TownPopulationDistance
Forest Heights 2,642 1.4 mi
Oxon Hill 17,893 2.0 mi
Belle Haven, VA 6,570 2.7 mi
Friendly 11,119 2.7 mi
Glassmanor 16,981 2.8 mi
Fort Washington 25,134 3.5 mi
Huntington, VA 13,502 3.6 mi
Temple Hills 8,969 3.7 mi
Hillcrest Heights 16,063 4.2 mi
Fort Hunt, VA 16,700 4.2 mi
Marlow Heights 5,456 4.3 mi
Hybla Valley, VA 17,257 4.6 mi
Alexandria, VA 156,976 4.8 mi
Camp Springs 22,544 5.1 mi

More nearby: every ZIP code in Prince George's County · Maryland ZIP codes

Cite this page

zipcodes.pro. “National Harbor, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/national-harbor

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