ZIP Code 11731

ZIP Code Tabulation Area in Suffolk County, New York.

Population: 29,891
Median household income: $158,819
Median home value: $622,100

ZIP Code 11731 is a ZIP Code Tabulation Area in Suffolk County, New York, home to about 29,891 residents. Its median household income of $158,819 runs above the Suffolk County figure of $128,329.

From 2019 to 2023, ZIP Code 11731's population declined 1.8% from 30,436 to 29,891, while its median gross rent rose 17.5% from $1,924 to $2,261.

72.8% of workers drive to work alone. 91.2% of homes are single-family detached houses.

Demographics

ACS 2019–2023

Population: 29,891
Median age: 46.5 yrs
Median household income: $158,819
Median home value: $622,100
Median gross rent: $2,261
Housing units: 11,073
Homeownership rate: 91.3%
Bachelor's degree or higher: 51.0%
Unemployment rate: 3.3%

Trends

ACS 5-year · 2019–2023

Population

30,43629,891

Median household income

$120,619$158,819

Median home value

$487,100$622,100

Median gross rent

$1,924$2,261

Year	Population	Median household income	Median home value	Median gross rent
2019	30,436	$120,619	$487,100	$1,924
2020	30,951	$132,450	$504,600	$2,003
2021	31,115	$143,093	$534,100	$2,036
2022	30,714	$151,291	$603,200	$2,084
2023	29,891	$158,819	$622,100	$2,261

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.5%

5 to 1714.4%

18 to 247.6%

25 to 349.3%

35 to 4410.4%

45 to 5414.0%

55 to 6420.0%

65 to 749.6%

75 and over8.1%

	Count	Share
Under 5	1,939	6.5%
5 to 17	4,319	14.4%
18 to 24	2,266	7.6%
25 to 34	2,791	9.3%
35 to 44	3,123	10.4%
45 to 54	4,182	14.0%
55 to 64	5,970	20.0%
65 to 74	2,865	9.6%
75 and over	2,436	8.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	24,406	81.6%
Black or African American	612	2.0%
American Indian & Alaska Native	0	0.0%
Asian	1,181	4.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	260	0.9%
Two or more races	927	3.1%
Hispanic or Latino (any race)	2,505	8.4%

Educational attainment (age 25+)

No high school diploma4.3%

High school graduate19.8%

Some college or associate's24.8%

Bachelor's degree26.8%

Graduate or professional degree24.3%

	Count	Share
No high school diploma	920	4.3%
High school graduate	4,237	19.8%
Some college or associate's	5,303	24.8%
Bachelor's degree	5,723	26.8%
Graduate or professional degree	5,184	24.3%

Commute to work

Mean travel time to work: 36 min

Drove alone72.8%

Carpooled5.0%

Public transit8.1%

Walked1.1%

Bicycle0.0%

Worked from home12.8%

Other means0.2%

How workers get to work

	Count	Share
Drove alone	11,777	72.8%
Carpooled	817	5.0%
Public transit	1,303	8.1%
Walked	177	1.1%
Bicycle	6	0.0%
Worked from home	2,072	12.8%
Other means	34	0.2%

Travel time

	Count	Share
Under 15 min	2,586	18.3%
15 to 29 min	3,989	28.3%
30 to 44 min	3,526	25.0%
45 to 59 min	1,431	10.1%
60+ min	2,582	18.3%

Households

Average household size: 2.77
Poverty rate: 4.4% (1,305 of 29,808)

	Count	Share
Family households	7,977	74.4%
Nonfamily households	2,740	25.6%

Housing

Median year structure built: 1961

Occupancy

	Count	Share
Occupied	10,717	96.8%
Vacant	356	3.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	9,786	91.3%
Renter-occupied	931	8.7%

1-unit, detached91.2%

1-unit, attached2.7%

2 to 4 units4.1%

5 to 19 units1.1%

20 or more units0.8%

Mobile home & other0.1%

Units in structure

	Count	Share
1-unit, detached	10,096	91.2%
1-unit, attached	298	2.7%
2 to 4 units	455	4.1%
5 to 19 units	126	1.1%
20 or more units	88	0.8%
Mobile home & other	10	0.1%

ZIP Code 11731

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes