Holtsville, NY 11742 ZIP Code Profile

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Holtsville, NY

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ZIP Code 11742: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Holtsville, NY 11742

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 340
  • Single Family Addresses: 4,533
  • Multi-Family Addresses: 0
  • County: Suffolk County
  • Centroid: Latitude 40.811, Longitude -73.044
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

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11742 ZIP Code Map

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Holtsville, NY 11742 Data & Demographics (As of July 1, 2017)


Total Population 13,481
Daytime Population: Workers 4,886
Daytime Population: Residents 6,125
Total Daytime Population (TDP) 11,011
Ratio TDP/Total Population1 0.82
Population in Households 13,456
Population in Familes 11,739
Population in Group Qrtrs 25
Population Density2 2,473
Diversity Index3 41


Median Household Income $99,333
Average Household Income $118,645
Per Capita Income $40,772


Total Housing Units 4,845 (100%)
Owner Occupied HU 3,704 (76.4%)
Renter Occupied HU 922 (19.0%)
Vacant Housing Units 219 ( 4.5%)
Median Home Value $359,264
Average Home Value $397,435


Total Households 4,626
Average Household Size 2.91
Family Households 3,493
Average Family Size 3
  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 0.13% 0.23%
Households 0.02% 0.16%
Families -0.08% 0.1%
Median Household Income   1.39%
Per Capita Income   2.51%

Holtsville, NY 11742 - Peer Comparisons by Rank and Percentile

The table below compares 11742 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 # 441 75th
Population Density # 402 77th
Diversity Index # 513 71st
Median Household Income # 206 88th
Per Capita Income # 357 80th

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

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