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 High-density area
- $176,993
- Median income Above-median income area
- $654,300
- Median home value Above-median home value
- 47.6%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 11783 (Seaford, NY) rose +12.4% from 2023 to 2024. The all-transactions index moved from 236.7 in 2023 to 266.0 in 2024 (2000 = 100).
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 average New York ZIP), while per-capita income is $66,820. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.8% and unemployment is 3.1%. Housing is both higher-cost and owner-heavy: median home value is $654,300 (73% above the average New York ZIP), while 93.6% of occupied homes are owner-occupied and median rent is $2,612.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Nassau County, so 11783 can be compared with both its immediate and county-level context.
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.
- Construction
Construction
89 establishments
- Retail trade
Retail trade
70 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
63 establishments
- Other services (except public administration)
Other services (except public administration)
56 establishments
- Accommodation and food services
Accommodation and food services
47 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, 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
Who lives in ZIP 11783?
41.3
Median Age
50.0%
Male
50.0%
Female
7.6%
Foreign-Born
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 ZIP avg
$66,820
Per Capita Income
2.8%
Poverty Rate
3.1%
Unemployment Rate
38.0 min
Mean Commute Time
How ZIP 11783 ranks among New York ZIPs
Seaford, NY household income vs. every New York ZIP code
Median household income among 1,626 reporting New York ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$176,993 Top 4% higher than 96% of 1,626 New York ZIPs
Each bar is a $20K-wide band; taller bars hold more New York 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
7,296housing units
7,296
Total Housing Units
7,084
Occupied Units
212
Vacant Units
2.96
Avg Household Size
Occupancy Type
$654,300
Median Home Value
+73% vs state ZIP avg
$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.
- 11758
Massapequa (11758)
53,804 residents
- 11756
Levittown (11756)
42,791 residents
- 11566
Merrick (11566)
35,321 residents
- 11710
Bellmore (11710)
34,496 residents
- 11793
Wantagh (11793)
32,298 residents
- 11701
Amityville (11701)
27,109 residents
- 11714
Bethpage (11714)
22,658 residents
- 11762
Massapequa Park (11762)
22,360 residents
- 11783 21,288
Seaford (11783)
21,288 residents
What this shows Among its immediate neighbors, ZIP 11783 ranks #9 by population - useful context the national average alone can't give.
ZIP 11783 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 11566
Merrick (11566)
$177,079 median income
- 11783
Seaford (11783)
$176,993 median income
- 11710
Bellmore (11710)
$173,054 median income
- 11762
Massapequa Park (11762)
$169,624 median income
- 11793
Wantagh (11793)
$167,068 median income
- 11758
Massapequa (11758)
$154,110 median income
- 11756
Levittown (11756)
$146,019 median income
- 11726
Copiague (11726)
$128,425 median income
- 11575
Roosevelt (11575)
$126,146 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 11783, both outside NY so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (21,288 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Nassau County
Related Areas
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.
Related
Take this with you
What to do with ZIP 11783's numbers, next.
- See how ZIP 11783 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Seaford, NY ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.