How old are the homes in National Harbor, MD?

Name: Age of homes in National Harbor, MD, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

29.8% (±12.3 points) of the homes in National Harbor, MD were built before 1980 (2020–2024 American Community Survey).

0.8% were built before 1940.

33.1% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 29.8% (±12.3 points)
Built before 1940: 0.8%
Built 2010 or later: 33.1%

When the homes in National Harbor were built

Housing units by year structure built, 2020–2024
Year built	National Harbor	Prince George's County	Maryland	United States
2020 or later	5.2% (±5.1 points)	1.5%	1.4%	2.0%
2010 to 2019	27.9% (±9.5 points)	7.9%	8.1%	9.4%
2000 to 2009	33.1% (±11.6 points)	10.8%	11.5%	13.6%
1990 to 1999	0.0% (±1.6 points)	13.1%	13.1%	12.4%
1980 to 1989	4.0% (±3.8 points)	13.0%	14.8%	12.9%
1970 to 1979	9.5% (±8.3 points)	14.1%	13.5%	14.2%
1960 to 1969	10.2% (±6.7 points)	18.4%	11.5%	9.9%
1950 to 1959	9.3% (±5.8 points)	11.9%	10.5%	9.5%
1940 to 1949	0.0% (±1.6 points)	4.8%	5.0%	4.4%
1939 or earlier	0.8% (±1.4 points)	4.5%	10.7%	11.7%

In National Harbor, the share of homes built before 1980 is lower than in Prince George's County (53.7%).

It is also lower than in Maryland (51.2%).

It is lower than the national figure (49.7%).

In Prince George's County, National Harbor ranks 67 of 80 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 308 of 388.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

Why the age of a home matters: lead-based paint

Federal law treats housing built before 1978 as likely to contain lead-based paint.

Before a lease or sale of most pre-1978 housing, the landlord or seller must disclose any known lead-based paint and hazards and give the tenant or buyer the EPA pamphlet (42 U.S.C. § 4852d; 40 CFR part 745, subpart F; 24 CFR part 35, subpart A).

A contractor paid to renovate, repair or paint a pre-1978 home must be a certified firm, use a certified renovator and follow lead-safe work practices under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E) whenever the job disturbs more than 6 square feet of painted surface in a room or more than 20 square feet outside; window replacement and demolition always count (40 CFR 745.83).

Certification comes from EPA, or from the state where EPA has authorized the state to run the program.

The Census Bureau groups construction by decade, so the share built before 1978 lies between the share built before 1970 (20.3%) and the share built before 1980 (29.8%).

Homes built before 1980 in places near National Harbor

Nearest places with a published estimate, compared with National Harbor
Place	Distance	Homes built before 1980	Compared with this place
National Harbor	—	29.8% (±12.3 points)	—
Forest Heights	1.4 mi	97.7% (±20.0 points)	Higher
Oxon Hill	2.0 mi	66.0% (±7.0 points)	Higher
Belle Haven (community)	2.7 mi	86.6% (±10.5 points)	Higher
Friendly	2.7 mi	60.3% (±10.2 points)	Higher
Glassmanor	2.8 mi	63.2% (±9.1 points)	Higher
Fort Washington	3.5 mi	53.7% (±5.6 points)	Higher
Huntington	3.6 mi	53.3% (±6.3 points)	Higher
Temple Hills	3.7 mi	64.7% (±10.5 points)	Higher

Nearby places with a measurably higher figure: Forest Heights, MD (97.7%), Oxon Hill, MD (66.0%), Belle Haven (community), VA (86.6%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes built before 1980 across Prince George's County, place by place

Rank	Place	Homes built before 1980
61	Marlton	37.0% (±8.0 points)
62	Queen Anne (community)	34.4% (±15.8 points)
63	Springdale	34.0% (±10.2 points)
64	Glenn Dale	33.0% (±7.8 points)
65 (tie)	Queensland	30.1% (±13.9 points)
65 (tie)	Rosaryville	30.1% (±6.3 points)
67	National Harbor	29.8% (±12.3 points)
68	Kettering	28.1% (±6.8 points)
69	Accokeek	26.3% (±7.1 points)
70	Melwood	26.0% (±10.7 points)
71	Westphalia	20.7% (±6.0 points)
72	Brandywine	19.7% (±5.9 points)
73	Brown Station	19.6% (±13.9 points)

Showing 13 of 80 places in Prince George's County, ranked from highest to lowest.

National Harbor is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about National Harbor

How old are most homes in National Harbor?

29.8% of homes in National Harbor, MD were built before 1980 (2020–2024 American Community Survey).

Do homes in National Harbor need a lead paint disclosure?

A home built before 1978 does, before it is rented or sold, unless an exemption applies (42 U.S.C. § 4852d); between 20.3% and 29.8% of homes in National Harbor were built before then.

Does a contractor need lead certification to work on older homes in National Harbor?

Yes, when the job disturbs more than 6 square feet of paint in a room or 20 square feet outside, or replaces a window: the firm must be certified and a certified renovator must direct the work under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E).

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — National Harbor CDP, Maryland

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for National Harbor CDP, Maryland (place:55018, in state:24).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP04_0019PE, DP04_0019PM, DP04_0020PE, DP04_0020PM, DP04_0021PE, DP04_0021PM, DP04_0022PE, DP04_0022PM, DP04_0023PE, DP04_0023PM, DP04_0024PE, DP04_0024PM, DP04_0025PE, DP04_0025PM, DP04_0026PE, DP04_0026PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.