How old are the homes in Union Township (Hunterdon County), NJ?

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

54.3% (±11.4 points) of the homes in Union Township (Hunterdon County), NJ were built before 1980 (2020–2024 American Community Survey).

12.9% were built before 1940.

0.0% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 54.3% (±11.4 points)
Built before 1940: 12.9%
Built 2010 or later: 0.0%

When the homes in Union Township (Hunterdon County) were built

Housing units by year structure built, 2020–2024
Year built	Union Township (Hunterdon County)	Hunterdon County	New Jersey	United States
2020 or later	0.0% (±2.0 points)	0.8%	1.1%	2.0%
2010 to 2019	0.0% (±2.0 points)	3.3%	6.2%	9.4%
2000 to 2009	10.5% (±5.2 points)	9.6%	9.2%	13.6%
1990 to 1999	16.9% (±5.0 points)	15.0%	8.9%	12.4%
1980 to 1989	18.3% (±5.4 points)	20.6%	11.8%	12.9%
1970 to 1979	24.0% (±7.7 points)	13.6%	12.3%	14.2%
1960 to 1969	8.1% (±4.5 points)	8.6%	12.8%	9.9%
1950 to 1959	6.2% (±3.0 points)	7.6%	13.8%	9.5%
1940 to 1949	3.1% (±2.7 points)	3.3%	6.5%	4.4%
1939 or earlier	12.9% (±5.9 points)	17.5%	17.4%	11.7%

In Union Township (Hunterdon County), the share of homes built before 1980 is not measurably different from Hunterdon County (50.6%).

It is not measurably different from New Jersey (62.8%).

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

In Hunterdon County, Union Township (Hunterdon County) ranks 15 of 26 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 424 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 (30.3%) and the share built before 1980 (54.3%).

Homes built before 1980 in places near Union Township (Hunterdon County)

Nearest places with a published estimate, compared with Union Township (Hunterdon County)
Place	Distance	Homes built before 1980	Compared with this place
Union Township (Hunterdon County)	—	54.3% (±11.4 points)	—
Clinton Town	2.6 mi	52.6% (±9.8 points)	Not measurably different
Bethlehem Township	3.3 mi	53.6% (±10.5 points)	Not measurably different
Alexandria Township	4.1 mi	36.9% (±12.2 points)	Lower
Annandale	4.2 mi	39.4% (±14.8 points)	Not measurably different
Franklin Township (Hunterdon County)	4.7 mi	58.3% (±12.8 points)	Not measurably different
High Bridge Borough	4.7 mi	67.9% (±12.6 points)	Not measurably different
Glen Gardner Borough	4.9 mi	45.7% (±8.6 points)	Not measurably different
Hampton Borough	5.0 mi	69.2% (±12.1 points)	Not measurably different

Nearby places with a measurably lower figure: Alexandria Township, NJ (36.9%).

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

Homes built before 1980 across Hunterdon County, place by place

Rank	Place	Homes built before 1980
9	Hampton Borough	69.2% (±12.1 points)
10	High Bridge Borough	67.9% (±12.6 points)
11	Lebanon Township	61.6% (±10.2 points)
12	Holland Township	58.9% (±12.2 points)
13	Franklin Township (Hunterdon County)	58.3% (±12.8 points)
14	Kingwood Township	55.6% (±16.0 points)
15	Union Township (Hunterdon County)	54.3% (±11.4 points)
16	West Amwell Township	53.8% (±9.5 points)
17	Bethlehem Township	53.6% (±10.5 points)
18	Tewksbury Township	53.5% (±14.1 points)
19	Clinton Town	52.6% (±9.8 points)
20	Lebanon Borough	49.3% (±12.2 points)
21	Delaware Township	47.8% (±10.8 points)

Showing 13 of 26 places in Hunterdon 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 Union Township (Hunterdon 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 Union Township (Hunterdon 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 Union Township (Hunterdon County) beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

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

Browse rentals · Create a renter account

Questions about Union Township (Hunterdon County)

How old are most homes in Union Township (Hunterdon County)?

54.3% of homes in Union Township (Hunterdon County), NJ were built before 1980 (2020–2024 American Community Survey).

Do homes in Union Township (Hunterdon 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 30.3% and 54.3% of homes in Union Township (Hunterdon County) were built before then.

Does a contractor need lead certification to work on older homes in Union Township (Hunterdon 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 — Union township, Hunterdon 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 Union township, Hunterdon County, New Jersey (county subdivision:74420, in state:34 county:019).

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.