Selden, NY 11784 ZIP Code Profile

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Selden, NY

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ZIP Code 11784: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Selden, NY 11784

Not Acceptable, USPS
Old Westfield, NY 11784

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 513
  • Single Family Addresses: 7,303
  • Multi-Family Addresses: 184
  • County: Suffolk County
  • Centroid: Latitude 40.872, Longitude -73.044
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


11784 ZIP Code Map

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Selden, NY 11784 Data & Demographics (As of July 1, 2017)


Total Population 24,221
Daytime Population: Workers 4,802
Daytime Population: Residents 11,276
Total Daytime Population (TDP) 16,078
Ratio TDP/Total Population1 0.66
Population in Households 24,182
Population in Familes 20,807
Population in Group Qrtrs 39
Population Density2 4,342
Diversity Index3 52


Median Household Income $87,471
Average Household Income $99,225
Per Capita Income $31,982


Total Housing Units 8,282 (100%)
Owner Occupied HU 6,131 (74.0%)
Renter Occupied HU 1,664 (20.1%)
Vacant Housing Units 487 ( 5.9%)
Median Home Value $327,072
Average Home Value $342,889


Total Households 7,795
Average Household Size 3.1
Family Households 5,933
Average Family Size 4
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -0.05% 0.09%
Households -0.13% 0.03%
Families -0.22% -0.03%
Median Household Income   1.89%
Per Capita Income   2.34%

Selden, NY 11784 - Peer Comparisons by Rank and Percentile

The table below compares 11784 to the other 1,745 ZIP Codes in New York by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 273 84th
Population Density # 312 82nd
Diversity Index # 368 79th
Median Household Income # 307 82nd
Per Capita Income # 712 59th

Additional comparisons and rankings can be made with a VERY EASY TO USE New York Census Data Comparison Tool.

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