How old are the homes in Folsom, PA?

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

86.8% (±10.7 points) of the homes in Folsom, PA were built before 1980 (2020–2024 American Community Survey).

11.3% were built before 1940.

3.4% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 86.8% (±10.7 points)
Built before 1940: 11.3%
Built 2010 or later: 3.4%

When the homes in Folsom were built

Housing units by year structure built, 2020–2024
Year built	Folsom	Delaware County	Pennsylvania	United States
2020 or later	0.4% (±0.5 points)	0.6%	1.0%	2.0%
2010 to 2019	3.0% (±2.3 points)	2.9%	5.1%	9.4%
2000 to 2009	2.2% (±1.8 points)	4.6%	8.1%	13.6%
1990 to 1999	3.7% (±2.8 points)	5.7%	8.9%	12.4%
1980 to 1989	3.8% (±2.6 points)	7.1%	9.6%	12.9%
1970 to 1979	5.7% (±3.4 points)	9.4%	12.4%	14.2%
1960 to 1969	14.2% (±4.4 points)	12.3%	9.9%	9.9%
1950 to 1959	49.1% (±6.8 points)	23.5%	13.0%	9.5%
1940 to 1949	6.5% (±2.6 points)	12.0%	7.0%	4.4%
1939 or earlier	11.3% (±5.5 points)	22.1%	25.0%	11.7%

In Folsom, the share of homes built before 1980 is not measurably different from Delaware County (79.3%).

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

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

In Delaware County, Folsom ranks 5 of 12 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 63 of 391.

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 (81.1%) and the share built before 1980 (86.8%).

Homes built before 1980 in places near Folsom

Nearest places with a published estimate, compared with Folsom
Place	Distance	Homes built before 1980	Compared with this place
Folsom	—	86.8% (±10.7 points)	—
Rutledge	0.6 mi	95.2% (±16.2 points)	Not measurably different
Ridley Park	1.0 mi	88.7% (±10.4 points)	Not measurably different
Prospect Park	1.2 mi	86.3% (±16.3 points)	Not measurably different
Swarthmore	1.3 mi	91.5% (±13.3 points)	Not measurably different
Morton	1.3 mi	77.0% (±13.9 points)	Not measurably different
Woodlyn	1.3 mi	88.2% (±13.5 points)	Not measurably different
Norwood	1.8 mi	89.4% (±12.1 points)	Not measurably different
Nether Providence Township	2.0 mi	78.3% (±7.8 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

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

Homes built before 1980 across Delaware County, place by place

Rank	Place	Homes built before 1980
1	Haverford College	100.0% (±71.8 points)
2	Drexel Hill	93.8% (±6.2 points)
3	Linwood	92.0% (±20.1 points)
4	Woodlyn	88.2% (±13.5 points)
5	Folsom	86.8% (±10.7 points)
6	Broomall	86.4% (±8.2 points)
7	Village Green-Green Ridge	85.2% (±11.2 points)
8	Wayne	78.7% (±13.0 points)
9	St. Davids	73.0% (±14.1 points)
10	Villanova	67.4% (±14.1 points)
11	Boothwyn	63.0% (±12.4 points)

Showing 11 of 12 places in Delaware County, ranked from highest to lowest.

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

It lies inside Ridley Township, whose figures include it.

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 Folsom

How old are most homes in Folsom?

86.8% of homes in Folsom, PA were built before 1980 (2020–2024 American Community Survey).

Do homes in Folsom 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 81.1% and 86.8% of homes in Folsom were built before then.

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

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 — Folsom CDP, 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 Folsom CDP, Pennsylvania (place:26432, in state:42).

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.