How old are the homes in Allegheny Township (Westmoreland County), PA?

Name: Age of homes in Allegheny Township (Westmoreland County), PA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

57.1% (±9.0 points) of the homes in Allegheny Township (Westmoreland County), PA were built before 1980 (2020–2024 American Community Survey).

7.9% were built before 1940.

2.2% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 57.1% (±9.0 points)
Built before 1940: 7.9%
Built 2010 or later: 2.2%

When the homes in Allegheny Township (Westmoreland County) were built

Housing units by year structure built, 2020–2024
Year built	Allegheny Township (Westmoreland County)	Westmoreland County	Pennsylvania	United States
2020 or later	0.0% (±0.9 points)	0.7%	1.0%	2.0%
2010 to 2019	2.2% (±1.6 points)	3.7%	5.1%	9.4%
2000 to 2009	10.1% (±3.8 points)	7.4%	8.1%	13.6%
1990 to 1999	19.9% (±6.3 points)	8.6%	8.9%	12.4%
1980 to 1989	10.7% (±4.1 points)	8.4%	9.6%	12.9%
1970 to 1979	14.8% (±5.0 points)	14.2%	12.4%	14.2%
1960 to 1969	14.0% (±4.7 points)	12.5%	9.9%	9.9%
1950 to 1959	13.8% (±4.1 points)	16.4%	13.0%	9.5%
1940 to 1949	6.6% (±2.8 points)	8.3%	7.0%	4.4%
1939 or earlier	7.9% (±2.9 points)	19.8%	25.0%	11.7%

In Allegheny Township (Westmoreland County), the share of homes built before 1980 is lower than in Westmoreland County (71.2%).

It is also lower than in Pennsylvania (67.3%).

It is not measurably different from the national figure (49.7%).

In Westmoreland County, Allegheny Township (Westmoreland County) ranks 58 of 65 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1699 of 2,558.

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 (42.3%) and the share built before 1980 (57.1%).

Homes built before 1980 in places near Allegheny Township (Westmoreland County)

Nearest places with a published estimate, compared with Allegheny Township (Westmoreland County)
Place	Distance	Homes built before 1980	Compared with this place
Allegheny Township (Westmoreland County)	—	57.1% (±9.0 points)	—
West Leechburg	1.7 mi	77.4% (±11.9 points)	Higher
Leechburg	2.2 mi	94.5% (±12.1 points)	Higher
Hyde Park	2.9 mi	89.8% (±18.7 points)	Higher
Vandergrift	3.5 mi	97.2% (±11.4 points)	Higher
Oklahoma	4.0 mi	95.0% (±17.7 points)	Higher
East Vandergrift	4.2 mi	90.6% (±14.3 points)	Higher
Gilpin Township	4.2 mi	78.9% (±10.4 points)	Higher
Harrison Township (Allegheny County)	4.4 mi	88.2% (±9.2 points)	Higher

Nearby places with a measurably higher figure: West Leechburg, PA (77.4%), Leechburg, PA (94.5%), Hyde Park, PA (89.8%).

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

Homes built before 1980 across Westmoreland County, place by place

Rank	Place	Homes built before 1980
52	Cook Township	66.1% (±14.1 points)
53	Salem Township (Westmoreland County)	63.5% (±10.4 points)
54	Washington Township (Westmoreland County)	62.2% (±8.6 points)
55	Unity Township	61.8% (±6.0 points)
56	Upper Burrell Township	59.1% (±11.8 points)
57	Delmont	57.4% (±13.3 points)
58	Allegheny Township (Westmoreland County)	57.1% (±9.0 points)
59 (tie)	Fairfield Township (Westmoreland County)	56.4% (±10.0 points)
59 (tie)	Rostraver Township	56.4% (±7.5 points)
61	Donegal Township (Westmoreland County)	52.4% (±11.8 points)
62 (tie)	Murrysville	52.1% (±5.6 points)
62 (tie)	Penn Township (Westmoreland County)	52.1% (±5.8 points)
64	East Huntingdon Township	48.2% (±8.7 points)

Showing 13 of 65 places in Westmoreland County, ranked from highest to lowest.

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 Allegheny Township (Westmoreland County)

How old are most homes in Allegheny Township (Westmoreland County)?

57.1% of homes in Allegheny Township (Westmoreland County), PA were built before 1980 (2020–2024 American Community Survey).

Do homes in Allegheny Township (Westmoreland County) 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 42.3% and 57.1% of homes in Allegheny Township (Westmoreland County) were built before then.

Does a contractor need lead certification to work on older homes in Allegheny Township (Westmoreland County)?

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 — Allegheny township, Westmoreland County, Pennsylvania

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 Allegheny township, Westmoreland County, Pennsylvania (county subdivision:00892, in state:42 county:129).

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.