How old are the homes in Allentown Borough, NJ?

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

86.8% (±11.4 points) of the homes in Allentown Borough, NJ were built before 1980 (2020–2024 American Community Survey).

32.7% were built before 1940.

0.0% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 86.8% (±11.4 points)
Built before 1940: 32.7%
Built 2010 or later: 0.0%

When the homes in Allentown Borough were built

Housing units by year structure built, 2020–2024
Year built	Allentown Borough	Monmouth County	New Jersey	United States
2020 or later	0.0% (±6.0 points)	1.1%	1.1%	2.0%
2010 to 2019	0.0% (±6.0 points)	6.3%	6.2%	9.4%
2000 to 2009	2.9% (±2.2 points)	8.9%	9.2%	13.6%
1990 to 1999	8.1% (±3.4 points)	11.1%	8.9%	12.4%
1980 to 1989	2.3% (±1.9 points)	15.6%	11.8%	12.9%
1970 to 1979	17.4% (±4.2 points)	12.9%	12.3%	14.2%
1960 to 1969	7.1% (±3.3 points)	14.0%	12.8%	9.9%
1950 to 1959	23.0% (±6.7 points)	12.5%	13.8%	9.5%
1940 to 1949	6.6% (±4.0 points)	4.2%	6.5%	4.4%
1939 or earlier	32.7% (±6.4 points)	13.5%	17.4%	11.7%

In Allentown Borough, the share of homes built before 1980 is higher than in Monmouth County (57.1%).

It is also higher than in New Jersey (62.8%).

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

In Monmouth County, Allentown Borough ranks 4 of 53 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 59 of 564.

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 (69.4%) and the share built before 1980 (86.8%).

Homes built before 1980 in places near Allentown Borough

Nearest places with a published estimate, compared with Allentown Borough
Place	Distance	Homes built before 1980	Compared with this place
Allentown Borough	—	86.8% (±11.4 points)	—
Robbinsville Township	3.1 mi	18.5% (±4.1 points)	Lower
Groveville	3.3 mi	62.8% (±19.3 points)	Lower
Robbinsville Center	3.6 mi	17.1% (±10.5 points)	Lower
Upper Freehold Township	3.6 mi	22.3% (±7.8 points)	Lower
Yardville	3.9 mi	87.5% (±14.3 points)	Not measurably different
Hamilton Square	4.5 mi	74.0% (±9.3 points)	Not measurably different
Hamilton Township (Mercer County)	4.9 mi	74.6% (±3.6 points)	Lower
Chesterfield Township	5.6 mi	20.6% (±7.2 points)	Lower

Nearby places with a measurably lower figure: Robbinsville Township, NJ (18.5%), Groveville, NJ (62.8%), Robbinsville Center, NJ (17.1%).

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

Homes built before 1980 across Monmouth County, place by place

Rank	Place	Homes built before 1980
1	Loch Arbour Village	98.7% (±36.5 points)
2	Allenhurst Borough	91.4% (±16.6 points)
3	Interlaken Borough	88.4% (±11.6 points)
4	Allentown Borough	86.8% (±11.4 points)
5	Shrewsbury Township	84.1% (±21.9 points)
6	Roosevelt Borough	83.0% (±15.8 points)
7	Deal Borough	81.7% (±9.8 points)
8	Keyport Borough	81.0% (±9.4 points)
9	Little Silver Borough	80.4% (±16.0 points)
10	Red Bank Borough	79.8% (±9.6 points)

Showing 10 of 53 places in Monmouth 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 Allentown Borough

How old are most homes in Allentown Borough?

86.8% of homes in Allentown Borough, NJ were built before 1980 (2020–2024 American Community Survey).

Do homes in Allentown Borough 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 69.4% and 86.8% of homes in Allentown Borough were built before then.

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

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 — Allentown borough, Monmouth County, New Jersey

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 Allentown borough, Monmouth County, New Jersey (county subdivision:00760, in state:34 county:025).

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.