How old are the homes in Monroe Township (Middlesex County), NJ?

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

28.1% (±2.8 points) of the homes in Monroe Township (Middlesex County), NJ were built before 1980 (2020–2024 American Community Survey).

2.0% were built before 1940.

19.8% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 28.1% (±2.8 points)
Built before 1940: 2.0%
Built 2010 or later: 19.8%

When the homes in Monroe Township (Middlesex County) were built

Housing units by year structure built, 2020–2024
Year built	Monroe Township (Middlesex County)	Middlesex County	New Jersey	United States
2020 or later	1.3% (±0.6 points)	0.9%	1.1%	2.0%
2010 to 2019	18.5% (±2.2 points)	6.6%	6.2%	9.4%
2000 to 2009	23.0% (±2.6 points)	9.0%	9.2%	13.6%
1990 to 1999	14.0% (±1.4 points)	10.0%	8.9%	12.4%
1980 to 1989	15.2% (±1.9 points)	16.0%	11.8%	12.9%
1970 to 1979	14.8% (±1.8 points)	11.7%	12.3%	14.2%
1960 to 1969	7.2% (±1.6 points)	14.9%	12.8%	9.9%
1950 to 1959	3.2% (±1.0 points)	15.2%	13.8%	9.5%
1940 to 1949	0.9% (±0.6 points)	5.2%	6.5%	4.4%
1939 or earlier	2.0% (±0.9 points)	10.4%	17.4%	11.7%

In Monroe Township (Middlesex County), the share of homes built before 1980 is lower than in Middlesex County (57.4%).

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

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

In Middlesex County, Monroe Township (Middlesex County) ranks 24 of 25 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 546 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 (13.3%) and the share built before 1980 (28.1%).

Homes built before 1980 in places near Monroe Township (Middlesex County)

Nearest places with a published estimate, compared with Monroe Township (Middlesex County)
Place	Distance	Homes built before 1980	Compared with this place
Monroe Township (Middlesex County)	—	28.1% (±2.8 points)	—
Jamesburg Borough	2.1 mi	51.0% (±16.9 points)	Higher
Englishtown Borough	4.0 mi	37.0% (±11.1 points)	Not measurably different
Helmetta Borough	4.1 mi	40.6% (±8.6 points)	Higher
Yorketown	4.8 mi	56.8% (±9.6 points)	Higher
Cranbury	4.8 mi	49.7% (±15.4 points)	Higher
Cranbury Township	4.8 mi	33.5% (±9.1 points)	Not measurably different
Manalapan Township	5.0 mi	39.1% (±4.7 points)	Higher
Twin Rivers	5.1 mi	83.9% (±13.1 points)	Higher

Nearby places with a measurably higher figure: Jamesburg Borough, NJ (51.0%), Helmetta Borough, NJ (40.6%), Yorketown, NJ (56.8%).

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

Homes built before 1980 across Middlesex County, place by place

Rank	Place	Homes built before 1980
18	Edison Township	55.7% (±2.7 points)
19	Jamesburg Borough	51.0% (±16.9 points)
20	North Brunswick Township	46.1% (±3.9 points)
21	Helmetta Borough	40.6% (±8.6 points)
22	Cranbury Township	33.5% (±9.1 points)
23	South Brunswick Township	31.3% (±3.2 points)
24	Monroe Township (Middlesex County)	28.1% (±2.8 points)
25	Plainsboro Township	25.7% (±4.5 points)

Showing 8 of 25 places in Middlesex County, ranked from highest to lowest.

The figures for Monroe Township (Middlesex County) include the places inside it that have pages of their own: Clearbrook, Concordia, Forsgate, Monroe Manor, Regency at Monroe, Rossmoor, Stonebridge, The Ponds, +1.

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 Monroe Township (Middlesex County)

One account for renting, owning, managing and fixing homes, with these figures beside you.

Do repairs, renovations or maintenance?

Get found by owners and renters near Monroe Township (Middlesex County), and send estimates and invoices from your phone.

Join as a pro · Find a pro

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Monroe Township (Middlesex County) beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Monroe Township (Middlesex County), save the ones you like and apply online.

Browse rentals · Create a renter account

Questions about Monroe Township (Middlesex County)

How old are most homes in Monroe Township (Middlesex County)?

28.1% of homes in Monroe Township (Middlesex County), NJ were built before 1980 (2020–2024 American Community Survey).

Do homes in Monroe Township (Middlesex 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 13.3% and 28.1% of homes in Monroe Township (Middlesex County) were built before then.

Does a contractor need lead certification to work on older homes in Monroe Township (Middlesex 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 — Monroe township, Middlesex 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 Monroe township, Middlesex County, New Jersey (county subdivision:47280, in state:34 county:023).

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.