PlainZIP

Seaford, NY · standard

ZIP Code 11783

Nassau County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

21,288
2,318/sq mi
$176,993
Median income
$654,300
Median home value
47.6%
Bachelor's or higher

The verdict

Seaford pairs a top-decile household income with top-decile home values, in a suburban-density, homeowner-dominated area.

Top 2%
household income, US ZIPs
Top 7%
home value, US ZIPs
2,318
people per sq mi
94%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11783 against every reporting US ZIP.

ZIP code 11783 is a densely settled ZIP (a standard USPS delivery area) in Seaford, Nassau County, New York, with 21,288 residents across 9.2 square miles, a density of 2,318 people per square mile, in the New York time zone.

ZIP 11783 skews affluent, with a median household income of $176,993 (91% above the New York average), while per-capita income is $66,820. Local economic indicators show a 2.8% poverty rate alongside 3.1% unemployment. Housing costs here run $654,300 for a typical home value (73% above the state average), with rent averaging $2,612 a month; 93.6% of homes are owner-occupied.

A solid share of residents have a four-year degree: 47.6% of adults hold a bachelor's degree or higher, the median age is 41.3, and the average commute is 38 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Nassau County, so you can benchmark 11783 against its immediate geography rather than a national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 11783

Top 5 sectors by establishment count in Seaford, NY

Which industries have the most business establishments in ZIP 11783.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 11783, Seaford, NY · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

21,288

Population

9.2

Area (sq mi)

2,318

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 11783?

41.3

Median Age

50.0%

Male

50.0%

Female

7.6%

Foreign-Born

White 85.9%
African American 3.3%
Asian 4.2%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.1%
Hispanic or Latino 7.7%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$176,993

Median Household Income

+91% vs state

$66,820

Per Capita Income

2.8%

Poverty Rate

3.1%

Unemployment Rate

38.0 min

Mean Commute Time

How ZIP 11783 ranks nationally

Seaford, NY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$176,993 Top 2% higher than 98% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). This entry sits in this band. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 71.7%
Bachelor's Degree or Higher 47.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

7,296

Total Housing Units

7,084

Occupied Units

212

Vacant Units

2.96

Avg Household Size

Occupancy Type

Owner 93.6%
Renter 6.4%

$654,300

Median Home Value

+73% vs state

$2,612

Median Rent

1957

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+12.4%

YoY Change (2024)

266

HPI Index (2000 = 100)

+166%

Total Change Since 2000

Home values in ZIP 11783 have increased 12.4% over the past year (2024). Since 2000, this ZIP has seen +166% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.8% 194
2021 +8.3% 210
2022 +10.0% 231
2023 +2.5% 237
2024 +12.4% 266

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 494 business establishments in ZIP 11783, employing approximately 4,340 people with a combined annual payroll of $223,162,000.

494

Businesses

4,340

Employees

$223.2M

Annual Payroll

14

Industry Sectors

Industry Establishments % of Total
Construction 89 18.0%
Retail trade 70 14.2%
Professional, scientific, and technical services 63 12.8%
Other services (except public administration) 56 11.3%
Accommodation and food services 47 9.5%
Health care and social assistance 41 8.3%
Administrative and support and waste management and remediation services 29 5.9%
Wholesale trade 19 3.9%
Finance and insurance 18 3.6%
Transportation and warehousing 17 3.4%
Real estate and rental and leasing 15 3.0%
Educational services 11 2.2%
Arts, entertainment, and recreation 10 2.0%
Information 5 1.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 11783 vs 11758 →

ZIP 11783 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 11783 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 11783 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 11783 ranks #2 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
11758 Massapequa, NY 53,804 1.8 mi
11710 Bellmore, NY 34,496 2.2 mi
11762 Massapequa Park, NY 22,360 2.3 mi
11793 Wantagh, NY 32,298 2.2 mi
11714 Bethpage, NY 22,658 4.5 mi
11756 Levittown, NY 42,791 3.6 mi
11566 Merrick, NY 35,321 3.5 mi
11701 Amityville, NY 27,109 4.1 mi
11726 Copiague, NY 19,857 5.0 mi
11575 Roosevelt, NY 16,272 5.0 mi

More ZIP Codes in Nassau County

11550 standard
Hempstead, NY
Pop: 56,435
11758 standard
Massapequa, NY
Pop: 53,804
11590 standard
Westbury, NY
Pop: 45,768
11520 standard
Freeport, NY
Pop: 43,341
11756 standard
Levittown, NY
Pop: 42,791
11003 standard
Elmont, NY
Pop: 41,356

Related Areas

Nassau County Seaford, NY New York

Frequently Asked Questions

What county is ZIP code 11783 in? ▼
ZIP code 11783 (Seaford) is located in Nassau County, New York. Nassau County contains multiple ZIP codes, see the full list at /counties/nassau-ny.
What is the population of ZIP code 11783? ▼
ZIP code 11783 in Seaford, NY has a population of 21,288 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11783? ▼
The median household income in ZIP 11783 is $176,993, which is 132% above the national average of $76,288.
What is the average home value in ZIP 11783? ▼
The median home value in ZIP 11783 is $654,300, which is 135% above the national average of $278,155.
What is the demographic makeup of ZIP 11783? ▼
The largest racial group in ZIP 11783 is White at 85.9%. Hispanic or Latino residents make up 7.7% of the population.
How many businesses are in ZIP code 11783? ▼
ZIP code 11783 has 494 business establishments employing approximately 4,340 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11783? ▼
The top industries by establishment count in ZIP 11783 are: Construction (89), Retail trade (70), Professional, scientific, and technical services (63). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 11783? ▼
According to the FHFA House Price Index, home values in ZIP 11783 increased by 12.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 166%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 11783? ▼
In ZIP code 11783, 71.7% of residents aged 25+ have a high school diploma or higher, and 47.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 11783? ▼
The mean commute time for workers in ZIP code 11783 is 38.0 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 11783? ▼
In ZIP code 11783, approximately 93.6% of occupied housing units are owner-occupied and 6.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11783? ▼
The poverty rate in ZIP code 11783 is 2.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.