How old are the homes in Heidelberg Township (Lehigh County), PA?

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

56.4% (±13.4 points) of the homes in Heidelberg Township (Lehigh County), PA were built before 1980 (2020–2024 American Community Survey).

21.5% were built before 1940.

3.9% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 56.4% (±13.4 points)
Built before 1940: 21.5%
Built 2010 or later: 3.9%

When the homes in Heidelberg Township (Lehigh County) were built

Housing units by year structure built, 2020–2024
Year built	Heidelberg Township (Lehigh County)	Lehigh County	Pennsylvania	United States
2020 or later	3.4% (±3.0 points)	1.1%	1.0%	2.0%
2010 to 2019	0.5% (±1.0 points)	5.5%	5.1%	9.4%
2000 to 2009	11.2% (±5.1 points)	10.1%	8.1%	13.6%
1990 to 1999	13.5% (±6.0 points)	8.9%	8.9%	12.4%
1980 to 1989	14.9% (±6.4 points)	9.8%	9.6%	12.9%
1970 to 1979	25.7% (±8.9 points)	12.8%	12.4%	14.2%
1960 to 1969	5.9% (±5.0 points)	10.3%	9.9%	9.9%
1950 to 1959	3.3% (±3.1 points)	11.7%	13.0%	9.5%
1940 to 1949	0.0% (±2.4 points)	5.7%	7.0%	4.4%
1939 or earlier	21.5% (±7.8 points)	24.2%	25.0%	11.7%

In Heidelberg Township (Lehigh County), the share of homes built before 1980 is not measurably different from Lehigh County (64.7%).

It is not measurably different from Pennsylvania (67.3%).

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

In Lehigh County, Heidelberg Township (Lehigh County) ranks 13 of 24 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1731 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 (30.7%) and the share built before 1980 (56.4%).

Homes built before 1980 in places near Heidelberg Township (Lehigh County)

Nearest places with a published estimate, compared with Heidelberg Township (Lehigh County)
Place	Distance	Homes built before 1980	Compared with this place
Heidelberg Township (Lehigh County)	—	56.4% (±13.4 points)	—
Washington Township (Lehigh County)	3.9 mi	59.9% (±12.0 points)	Not measurably different
Lowhill Township	4.5 mi	50.3% (±13.0 points)	Not measurably different
Schnecksville	4.8 mi	40.1% (±10.9 points)	Not measurably different
East Penn Township	4.9 mi	40.4% (±8.8 points)	Not measurably different
Lynn Township	5.2 mi	49.9% (±7.9 points)	Not measurably different
Slatington	5.8 mi	89.8% (±11.7 points)	Higher
Walnutport	6.4 mi	75.0% (±14.6 points)	Not measurably different
North Whitehall Township	6.6 mi	40.6% (±5.0 points)	Lower

Nearby places with a measurably lower figure: North Whitehall Township, PA (40.6%).

Nearby places with a measurably higher figure: Slatington, 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 Lehigh County, place by place

Rank	Place	Homes built before 1980
7	Hanover Township (Lehigh County)	76.0% (±18.1 points)
8	Salisbury Township (Lehigh County)	74.6% (±8.0 points)
9	Coplay	73.3% (±15.6 points)
10	Whitehall Township	70.0% (±6.5 points)
11	South Whitehall Township	60.2% (±6.2 points)
12	Washington Township (Lehigh County)	59.9% (±12.0 points)
13	Heidelberg Township (Lehigh County)	56.4% (±13.4 points)
14	Lower Milford Township	56.0% (±11.9 points)
15	Upper Milford Township	50.9% (±9.4 points)
16	Lowhill Township	50.3% (±13.0 points)
17	Lynn Township	49.9% (±7.9 points)
18	Alburtis	48.7% (±11.9 points)
19	Macungie	44.4% (±9.1 points)

Showing 13 of 24 places in Lehigh 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 Heidelberg Township (Lehigh County)

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Questions about Heidelberg Township (Lehigh County)

How old are most homes in Heidelberg Township (Lehigh County)?

56.4% of homes in Heidelberg Township (Lehigh County), PA were built before 1980 (2020–2024 American Community Survey).

Do homes in Heidelberg Township (Lehigh 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 30.7% and 56.4% of homes in Heidelberg Township (Lehigh County) were built before then.

Does a contractor need lead certification to work on older homes in Heidelberg Township (Lehigh 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 — Heidelberg township, Lehigh 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 Heidelberg township, Lehigh County, Pennsylvania (county subdivision:33616, in state:42 county:077).

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.