West Middlesex, PA 16159 ZIP Code Profile

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West Middlesex, PA

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ZIP Code 16159: Basic Data & USPS Preferred City Name

Preferred Name, USPS
West Middlesex, PA 16159

Acceptable Alternative
W Middlesex, PA 16159

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 119
  • Single Family Addresses: 1,552
  • Multi-Family Addresses: 217
  • County: Mercer County
  • Centroid: Latitude 41.185, Longitude -80.455
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 16159 has segments in 2 Counties (Lawrence, Mercer).

Neighborhood Data

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16159 ZIP Code Map

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West Middlesex, PA 16159 Data & Demographics (As of July 1, 2017)


Total Population 4,513
Daytime Population: Workers 1,865
Daytime Population: Residents 2,446
Total Daytime Population (TDP) 4,311
Ratio TDP/Total Population1 0.96
Population in Households 4,495
Population in Familes 3,735
Population in Group Qrtrs 18
Population Density2 171
Diversity Index3 8


Median Household Income $57,590
Average Household Income $70,016
Per Capita Income $29,101


Total Housing Units 2,123 (100%)
Owner Occupied HU 1,546 (72.8%)
Renter Occupied HU 327 (15.4%)
Vacant Housing Units 250 (11.8%)
Median Home Value $134,989
Average Home Value $156,387


Total Households 1,873
Average Household Size 2.4
Family Households 1,314
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 -0.53% -0.59%
Households -0.51% -0.58%
Families -0.6% -0.65%
Median Household Income   2.73%
Per Capita Income   2.73%

West Middlesex, PA 16159 - Peer Comparisons by Rank and Percentile

The table below compares 16159 to the other 1,663 ZIP Codes in Pennsylvania 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 # 682 59th
Population Density # 947 43rd
Diversity Index # 979 41st
Median Household Income # 526 68th
Per Capita Income # 594 64th

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

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