How old are the homes in Jefferson Township (Somerset County), PA?

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

31.8% (±6.1 points) of the homes in Jefferson Township (Somerset County), PA were built before 1980 (2020–2024 American Community Survey).

11.9% were built before 1940.

2.6% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 31.8% (±6.1 points)
Built before 1940: 11.9%
Built 2010 or later: 2.6%

When the homes in Jefferson Township (Somerset County) were built

Housing units by year structure built, 2020–2024
Year built	Jefferson Township (Somerset County)	Somerset County	Pennsylvania	United States
2020 or later	0.7% (±0.8 points)	0.5%	1.0%	2.0%
2010 to 2019	1.9% (±1.3 points)	3.3%	5.1%	9.4%
2000 to 2009	8.1% (±3.1 points)	7.5%	8.1%	13.6%
1990 to 1999	17.4% (±4.6 points)	9.5%	8.9%	12.4%
1980 to 1989	40.0% (±5.2 points)	10.4%	9.6%	12.9%
1970 to 1979	8.8% (±2.9 points)	14.4%	12.4%	14.2%
1960 to 1969	2.9% (±1.8 points)	7.8%	9.9%	9.9%
1950 to 1959	2.8% (±1.4 points)	10.4%	13.0%	9.5%
1940 to 1949	5.4% (±3.6 points)	8.0%	7.0%	4.4%
1939 or earlier	11.9% (±3.3 points)	28.2%	25.0%	11.7%

In Jefferson Township (Somerset County), the share of homes built before 1980 is lower than in Somerset County (68.8%).

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

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

In Somerset County, Jefferson Township (Somerset County) ranks 50 of 50 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 2478 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 (23.0%) and the share built before 1980 (31.8%).

Homes built before 1980 in places near Jefferson Township (Somerset County)

Nearest places with a published estimate, compared with Jefferson Township (Somerset County)
Place	Distance	Homes built before 1980	Compared with this place
Jefferson Township (Somerset County)	—	31.8% (±6.1 points)	—
Seven Springs	4.4 mi	47.8% (±60.2 points)	Not measurably different
Donegal Township (Westmoreland County)	5.9 mi	52.4% (±11.8 points)	Higher
Lincoln Township (Somerset County)	6.6 mi	68.0% (±11.7 points)	Higher
Middlecreek Township (Somerset County)	7.2 mi	39.2% (±5.7 points)	Not measurably different
Cook Township	7.6 mi	66.1% (±14.1 points)	Higher
Milford Township (Somerset County)	8.2 mi	51.6% (±9.6 points)	Higher
Donegal	8.6 mi	89.5% (±55.6 points)	Higher
Saltlick Township	8.7 mi	61.1% (±21.7 points)	Higher

Nearby places with a measurably higher figure: Donegal Township (Westmoreland County), PA (52.4%), Lincoln Township (Somerset County), PA (68.0%), Cook Township, PA (66.1%).

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

Homes built before 1980 across Somerset County, place by place

Rank	Place	Homes built before 1980
44	Addison Township	52.5% (±9.9 points)
45	Milford Township (Somerset County)	51.6% (±9.6 points)
46	Allegheny Township (Somerset County)	50.8% (±9.5 points)
47	Callimont	50.0% (±166.6 points)
48	Seven Springs	47.8% (±60.2 points)
49	Middlecreek Township (Somerset County)	39.2% (±5.7 points)
50	Jefferson Township (Somerset County)	31.8% (±6.1 points)

Showing 7 of 50 places in Somerset 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.

What you can do on Seayora in Jefferson Township (Somerset County)

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Questions about Jefferson Township (Somerset County)

How old are most homes in Jefferson Township (Somerset County)?

31.8% of homes in Jefferson Township (Somerset County), PA were built before 1980 (2020–2024 American Community Survey).

Do homes in Jefferson Township (Somerset 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 23.0% and 31.8% of homes in Jefferson Township (Somerset County) were built before then.

Does a contractor need lead certification to work on older homes in Jefferson Township (Somerset 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 — Jefferson township, Somerset 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 Jefferson township, Somerset County, Pennsylvania (county subdivision:37920, in state:42 county:111).

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.