How old are the homes in Great River, NY?

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

58.0% (±13.9 points) of the homes in Great River, NY were built before 1980 (2020–2024 American Community Survey).

7.5% were built before 1940.

37.2% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 58.0% (±13.9 points)
Built before 1940: 7.5%
Built 2010 or later: 37.2%

When the homes in Great River were built

Housing units by year structure built, 2020–2024
Year built	Great River	Suffolk County	New York	United States
2020 or later	3.8% (±3.1 points)	0.7%	0.8%	2.0%
2010 to 2019	33.4% (±8.9 points)	3.7%	5.3%	9.4%
2000 to 2009	3.7% (±2.5 points)	8.3%	6.4%	13.6%
1990 to 1999	1.1% (±1.6 points)	8.9%	5.9%	12.4%
1980 to 1989	0.0% (±4.5 points)	10.2%	7.7%	12.9%
1970 to 1979	8.4% (±5.5 points)	17.8%	9.8%	14.2%
1960 to 1969	22.0% (±7.9 points)	19.7%	12.1%	9.9%
1950 to 1959	19.5% (±9.3 points)	17.2%	14.1%	9.5%
1940 to 1949	0.6% (±1.0 points)	4.5%	7.6%	4.4%
1939 or earlier	7.5% (±3.6 points)	9.1%	30.3%	11.7%

In Great River, the share of homes built before 1980 is not measurably different from Suffolk County (68.3%).

It is also lower than in New York (73.9%).

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

In Suffolk County, Great River ranks 74 of 112 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 314 of 414.

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 (49.6%) and the share built before 1980 (58.0%).

Homes built before 1980 in places near Great River

Nearest places with a published estimate, compared with Great River
Place	Distance	Homes built before 1980	Compared with this place
Great River	—	58.0% (±13.9 points)	—
East Islip	1.1 mi	85.4% (±10.6 points)	Higher
Islip (community)	2.4 mi	77.2% (±7.8 points)	Higher
Islip Terrace	2.6 mi	88.5% (±14.8 points)	Higher
Oakdale	2.7 mi	75.5% (±11.5 points)	Not measurably different
North Great River	3.0 mi	79.9% (±15.2 points)	Higher
West Sayville	3.9 mi	86.0% (±12.7 points)	Higher
Bay Shore	4.0 mi	69.6% (±6.8 points)	Not measurably different
West Bay Shore	4.5 mi	76.3% (±14.5 points)	Not measurably different

Nearby places with a measurably higher figure: East Islip, NY (85.4%), Islip (community), NY (77.2%), Islip Terrace, NY (88.5%).

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

Homes built before 1980 across Suffolk County, place by place

Rank	Place	Homes built before 1980
68	North Amityville	62.3% (±8.7 points)
69	Jamesport	61.9% (±23.0 points)
70	Orient	61.5% (±14.9 points)
71	Flanders	60.3% (±17.4 points)
72	Shelter Island (community)	59.1% (±18.6 points)
73	Nesconset	58.9% (±10.0 points)
74	Great River	58.0% (±13.9 points)
75	Hampton Bays	57.1% (±6.7 points)
76	Miller Place	56.7% (±10.9 points)
77	East Shoreham	56.1% (±9.4 points)
78	Greenport West	55.9% (±14.2 points)
79	Ridge	54.9% (±6.5 points)
80	Mastic	54.5% (±8.1 points)

Showing 13 of 112 places in Suffolk County, ranked from highest to lowest.

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

It lies inside the Town of Islip, 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 Great River

How old are most homes in Great River?

58.0% of homes in Great River, NY were built before 1980 (2020–2024 American Community Survey).

Do homes in Great River 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 49.6% and 58.0% of homes in Great River were built before then.

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

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 — Great River CDP, New York

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 Great River CDP, New York (place:30235, in state:36).

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.