Allentown, PA 18104 ZIP Code Profile

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Allentown, PA

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ZIP Code 18104: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Allentown, PA 18104

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,110
  • Single Family Addresses: 15,177
  • Multi-Family Addresses: 2,226
  • County: Lehigh County
  • Centroid: Latitude 40.603, Longitude -75.532
  • 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.


18104 ZIP Code Map

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Allentown, PA 18104 Data & Demographics (As of July 1, 2017)


Total Population 43,745
Daytime Population: Workers 23,169
Daytime Population: Residents 21,741
Total Daytime Population (TDP) 44,910
Ratio TDP/Total Population1 1.03
Population in Households 40,632
Population in Familes 32,225
Population in Group Qrtrs 3,113
Population Density2 1,883
Diversity Index3 49


Median Household Income $73,325
Average Household Income $101,166
Per Capita Income $40,204


Total Housing Units 17,871 (100%)
Owner Occupied HU 12,087 (67.6%)
Renter Occupied HU 4,931 (27.6%)
Vacant Housing Units 853 ( 4.8%)
Median Home Value $232,287
Average Home Value $264,272


Total Households 17,018
Average Household Size 2.39
Family Households 10,842
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 0.5% 0.5%
Households 0.36% 0.41%
Families 0.27% 0.36%
Median Household Income   2.18%
Per Capita Income   2.28%

Allentown, PA 18104 - Peer Comparisons by Rank and Percentile

The table below compares 18104 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 # 33 98th
Population Density # 294 82nd
Diversity Index # 149 91st
Median Household Income # 219 87th
Per Capita Income # 157 91st

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

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