US ZIP Code
11783

Seaford, NY

Nassau County  ·  New York

● Active
👥 21,588 Population
💰 $164,128 Median HH Income
▲ 115% above avg ↑ 22% since 2019
🎂 41.4 Median Age ↓ 5% since 2019
🏠 $626,700 Median Home Value
▲ 125% above avg ↑ 34% since 2019
🎓 56.4% College Grads
▲ 46% above avg
📊 4.9% Unemployment
≈ Avg ↑ 22% since 2019
ZIP Code Details
ZIP Code11783
CitySeaford
StateNew York (NY)
CountyNassau County
Area Code363/516/631/934
Elevation21 ft
Latitude40.677612
Longitude-73.490014
TimezoneNew York (DST)
FIPS36059
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 51.2% (11,062) Female 48.8% (10,526) ♀

Race & Ethnicity

White: 84.4%Hispanic: 7.1%Black: 2.2%Asian: 3.8%Other: 1.8%Race
White84.4%
Hispanic7.1%
Black2.2%
Asian3.8%
Other1.8%

Age Breakdown

Under 5
4%
5–17
16%
18–24
10%
25–44
24%
45–64
28%
65+
8%

Key Indicators

Median Age41.4 yrs ↓ 5% since 2019
Avg Household Size3.03
Below Poverty2.9% ▼ 71% below avg
College Grads56.4% ▲ 46% above avg
Unemployment4.9% ≈ Avg
No HS Diploma114 (0.8%)
HS Graduate3,192 (21.7%)
Some College1,417 (9.6%)
Associates1,695 (11.5%)
Bachelors1,528 (10.4%)
Graduate Degree6,775 (46%)

Education

No HS: 0.8%HS Grad: 21.7%Some College: 9.6%Associates: 11.5%Bachelors: 10.4%Graduate: 46%Edu
No HS0.8%
HS Grad21.7%
Some College9.6%
Associates11.5%
Bachelors10.4%
Graduate46.0%
Housing & Income

Housing Tenure

Owner: 93.3%Renter: 6.7%Tenure
Owner93.3%
Renter6.7%

Home Value Distribution

Under $50k
0%
$50k–100k
0%
$100k–150k
1%
$150k–200k
1%
$200k–300k
0%
$300k–500k
16%
Over $500k
81%

Financials

Median HH Income$164,128 ▲ 115% above avg ↑ 22% since 2019
Median Home Value$626,700 ▲ 125% above avg ↑ 34% since 2019
Home/Income Ratio3.8x (nat avg ~3.5x)
Median Rent$2,806/mo ↑ 26% since 2019
Total Units7,320
Vacant Units230
Avg HH Size3.03

Income Distribution

Under $25k
5%
$25k–50k
4%
$50k–75k
7%
$75k–100k
9%
$100k–150k
20%
$150k–200k
17%
Over $200k
38%
Employment & Commute

How People Get to Work

Drove Alone
73%
Public Transit
15%
Walked
1%
Work From Home
11%

Commute Time

Under 15 min
16%
15–30 min
30%
30–45 min
20%
Over 45 min
34%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
37%
1960s–1970s
4%
1980s–1990s
3%
2000+
54%

Summary

Total Units7,320
Vacant230
Owner Occupied93.3%
Renter Occupied6.7%
Avg HH Size3.03
Frequently Asked Questions
ZIP code 11783 is in Seaford, NY, in Nassau County.
ZIP code 11783 is located in New York (NY).
ZIP code 11783 is in Nassau County, NY.
ZIP 11783 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 11783 is 21,588 people (ACS 2023).
The median household income in ZIP code 11783 is $164,128 (ACS 2023).
The median home value in ZIP 11783 is $626,700 (ACS 2023).
About ZIP Code 11783

ZIP code 11783 is located in Seaford, New York, within Nassau County. With a population of 21,588, this is a moderately populated ZIP code with a middle-aged community — the median age is 41.4 years. Economically, 11783 is a affluent ZIP code: the median household income of $164,128 is more than double the national average.

Real estate in ZIP code 11783 represents a premium housing market. The median home value of $626,700 is more than double the national average. Renters can expect to pay around $2,806 per month in median rent. Homeownership is strong here — 93.3% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 34% since 2019.

The population of 11783 is primarily White (84.44%). Residents are well-educated — 56.4% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 2.9%. Household income has grown by 22% since 2019.

The unemployment rate in 11783 stands at 4.9%, which is near the national average. As in most parts of the country, driving alone is the dominant commute mode at 69%.

Overall, ZIP code 11783 in Seaford, NY is characterized as affluent, well-educated, a middle-aged community, and predominantly owner-occupied. With 21,588 residents, a median household income of $164,128, and a median home value of $626,700, it offers a clear picture of life in this part of New York.