Holtsville, NY 11742 ZIP Code Profile

Related Place Profiles:
Holtsville, NY

ZIP Code 11742: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Holtsville, NY 11742

  • ZIP Code Type: STANDARD
  • County: Suffolk County
  • Centroid: Latitude 40.811, Longitude -73.044
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 349
  • PO Box Addresses: 145
  • Residential Addresses: 4,619
    • Multi-Family Addresses: 61
    • Single Family Addresses: 4,558

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 11742 2018 Demographic Data
  2. Growth Rates for 11742 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. New York Research Tools (Easy Tools & Current Data)
  3. New York Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Holtsville, NY 11742 Data & Demographics (As of July 1, 2018)


Total Population 13,159
Population in Households 13,136
Population in Familes 11,509
Population in Group Qrtrs 23
Population Density2 2,731
Diversity Index3 41


Median Household Income $103,136
Average Household Income $125,150
Per Capita Income $42,853


Total Housing Units 4,710 (100%)
Owner Occupied HU 3,604 (76.5%)
Renter Occupied HU 896 (19.0%)
Vacant Housing Units 210 ( 4.5%)
Median Home Value $365,082
Average Home Value $407,755


Total Households 4,500
Average Household Size 2.92
Family Households 3,402
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.21% 0.2%
Households 0.08% 0.12%
Families -0.01% 0.06%
Median Household Income   1.42%
Per Capita Income   2.68%

Holtsville, NY 11742 - Peer Comparisons by Rank and Percentile

The table below compares 11742 to the other 1,740 ZIP Codes in New York by rank and percentile using July 1, 2018 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 # 448 74th
Population Density # 388 78th
Diversity Index # 508 71st
Median Household Income # 200 89th
Per Capita Income # 348 80th

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