Smithtown, NY 11787 ZIP Code Profile

Related Place Profiles:
Smithtown, NY | Village Of The Branch, NY

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ZIP Code 11787: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Smithtown, NY 11787

Not Acceptable, USPS
Village Of The Branch, NY 11787

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,421
  • Single Family Addresses: 11,506
  • Multi-Family Addresses: 344
  • County: Suffolk County
  • Centroid: Latitude 40.855, Longitude -73.21
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

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11787 ZIP Code Map

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Smithtown, NY 11787 Data & Demographics (As of July 1, 2016)


Total Population 36,899
Population in Households 36,090
Population in Familes 32,306
Population in Group Qrtrs 809
Population Density1 2,393
Diversity Index2 26


Total Households 12,576
Average Household Size 2.87
Family Households 9,768
Average Family Size 3


Total Housing Units 13,072 (100%)
Owner Occupied HU 10,701 (81.9%)
Renter Occupied HU 1,875 (14.3%)
Vacant Housing Units 496 ( 3.8%)
Median Home Value $509,351
Average Home Value $563,359


Median Household Income $114,873
Average Household Income $146,627
Per Capita Income $50,668
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.03% 0.11%
Households 0.06% 0.13%
Families -0.04% 0.07%
Median Household Income   1.18%
Per Capita Income   1.43%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Smithtown, NY 11787 - Peer Comparisons by Rank and Percentile

The table below compares 11787 to the other 1,741 ZIP Codes in New York by rank and percentile using July 1, 2016 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 # 166 91st
Population Density1 # 407 77th
Diversity Index2 # 754 57th
Median Household Income # 80 95th
Per Capita Income # 161 91st

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

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