PlainZIP

Selden, NY · standard

ZIP Code 11784

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

24,655
1,742/sq mi
$104,369
Median income
$460,300
Median home value
29.2%
Bachelor's or higher

The verdict

Selden pairs an upper-quartile household income with upper-quartile home values, in a low-density, homeowner-dominated area.

Top 16%
household income, US ZIPs
Top 15%
home value, US ZIPs
1,742
people per sq mi
84%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11784 against every reporting US ZIP.

ZIP code 11784 is a densely settled ZIP (a standard USPS delivery area) in Selden, Suffolk County, New York, with 24,655 residents across 14.2 square miles, a density of 1,742 people per square mile, in the New York time zone.

ZIP 11784 lands in the middle-income range, with a median household income of $104,369 (13% above the New York average), while per-capita income is $43,370. Local economic indicators show a 6.4% poverty rate alongside 3.5% unemployment. Housing costs here run $460,300 for a typical home value (22% above the state average), with rent averaging $2,240 a month; 84.0% of homes are owner-occupied.

Educational attainment sits below the national norm: 29.2% of adults hold a bachelor's degree or higher, the median age is 39, and the average commute is 32 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 11784, plus 6 more within Suffolk County, give a clearer read than the 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 11784

Top 5 sectors by establishment count in Selden, NY

Which industries have the most business establishments in ZIP 11784.

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 11784, Selden, 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

24,655

Population

14.2

Area (sq mi)

1,742

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 11784?

39.0

Median Age

49.6%

Male

50.4%

Female

15.3%

Foreign-Born

White 63.1%
African American 3.8%
Asian 7.8%
American Indian or Alaska Native 0.3%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 14.8%
Hispanic or Latino 23.9%

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?

$104,369

Median Household Income

+13% vs state

$43,370

Per Capita Income

6.4%

Poverty Rate

3.5%

Unemployment Rate

32.1 min

Mean Commute Time

How ZIP 11784 ranks nationally

Selden, NY household income vs. every US ZIP code

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

$104,369 Top 16% higher than 84% 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%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $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 62.9%
Bachelor's Degree or Higher 29.2%

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

What does housing look like?

9,032

Total Housing Units

8,639

Occupied Units

393

Vacant Units

3.02

Avg Household Size

Occupancy Type

Owner 84.0%
Renter 16.0%

$460,300

Median Home Value

+22% vs state

$2,240

Median Rent

1969

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

+6.2%

YoY Change (2024)

317

HPI Index (2000 = 100)

+217%

Total Change Since 2000

Home values in ZIP 11784 have increased 6.2% over the past year (2024). Since 2000, this ZIP has seen +217% cumulative appreciation.

Year Annual Change HPI Index
2020 +6.0% 213
2021 +12.1% 239
2022 +15.0% 275
2023 +8.5% 298
2024 +6.2% 317

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 495 business establishments in ZIP 11784, employing approximately 2,999 people with a combined annual payroll of $109,026,000.

495

Businesses

2,999

Employees

$109.0M

Annual Payroll

14

Industry Sectors

Industry Establishments % of Total
Construction 96 19.4%
Retail trade 74 14.9%
Other services (except public administration) 72 14.6%
Accommodation and food services 55 11.1%
Health care and social assistance 54 10.9%
Professional, scientific, and technical services 40 8.1%
Administrative and support and waste management and remediation services 38 7.7%
Finance and insurance 16 3.2%
Wholesale trade 14 2.8%
Transportation and warehousing 8 1.6%
Educational services 8 1.6%
Arts, entertainment, and recreation 8 1.6%
Information 6 1.2%
Real estate and rental and leasing 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 11784 vs 11738 →

ZIP 11784 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 11784 ranks #5 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 11784 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 11784 ranks #null 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
11738 Farmingville, NY 17,638 2.1 mi
11720 Centereach, NY 29,189 2.1 mi
11776 Port Jefferson Station, NY 24,235 3.1 mi
11727 Coram, NY 29,030 2.1 mi
11742 Holtsville, NY 13,261 4.1 mi
11755 Lake Grove, NY 12,387 4.0 mi
11766 Mount Sinai, NY 12,635 4.8 mi
11763 Medford, NY 28,506 4.2 mi
11741 Holbrook, NY 27,655 5.3 mi
11777 Port Jefferson, NY 8,968 5.8 mi

More ZIP Codes in Suffolk County

11746 standard
Huntington Station, NY
Pop: 67,094
11706 standard
Bay Shore, NY
Pop: 62,543
11717 standard
Brentwood, NY
Pop: 60,745
11757 standard
Lindenhurst, NY
Pop: 45,700
11772 standard
Patchogue, NY
Pop: 44,837
11743 standard
Huntington, NY
Pop: 42,230

Related Areas

Suffolk County Selden, NY New York

Frequently Asked Questions

What county is ZIP code 11784 in? ▼
ZIP code 11784 (Selden) is located in Suffolk County, New York. Suffolk County contains multiple ZIP codes, see the full list at /counties/suffolk-ny.
What is the population of ZIP code 11784? ▼
ZIP code 11784 in Selden, NY has a population of 24,655 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11784? ▼
The median household income in ZIP 11784 is $104,369, which is 37% above the national average of $76,288.
What is the average home value in ZIP 11784? ▼
The median home value in ZIP 11784 is $460,300, which is 65% above the national average of $278,155.
What is the demographic makeup of ZIP 11784? ▼
The largest racial group in ZIP 11784 is White at 63.1%. Hispanic or Latino residents make up 23.9% of the population.
How many businesses are in ZIP code 11784? ▼
ZIP code 11784 has 495 business establishments employing approximately 2,999 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11784? ▼
The top industries by establishment count in ZIP 11784 are: Construction (96), Retail trade (74), Other services (except public administration) (72). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 11784? ▼
According to the FHFA House Price Index, home values in ZIP 11784 increased by 6.2% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 217%. 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 11784? ▼
In ZIP code 11784, 62.9% of residents aged 25+ have a high school diploma or higher, and 29.2% 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 11784? ▼
The mean commute time for workers in ZIP code 11784 is 32.1 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 11784? ▼
In ZIP code 11784, approximately 84.0% of occupied housing units are owner-occupied and 16.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11784? ▼
The poverty rate in ZIP code 11784 is 6.4% 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.