Bethlehem, PA 18020 ZIP Code Profile

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Bethlehem, PA

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ZIP Code 18020: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Bethlehem, PA 18020

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 560
  • Single Family Addresses: 7,563
  • Multi-Family Addresses: 242
  • County: Northampton County
  • Centroid: Latitude 40.627, Longitude -75.37
  • 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.


18020 ZIP Code Map

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Bethlehem, PA 18020 Data & Demographics (As of July 1, 2017)


Total Population 20,801
Daytime Population: Workers 9,902
Daytime Population: Residents 10,276
Total Daytime Population (TDP) 20,178
Ratio TDP/Total Population1 0.97
Population in Households 20,390
Population in Familes 17,792
Population in Group Qrtrs 411
Population Density2 1,539
Diversity Index3 42


Median Household Income $86,243
Average Household Income $105,257
Per Capita Income $39,164


Total Housing Units 7,863 (100%)
Owner Occupied HU 6,495 (82.6%)
Renter Occupied HU 1,159 (14.7%)
Vacant Housing Units 209 ( 2.7%)
Median Home Value $280,413
Average Home Value $305,828


Total Households 7,654
Average Household Size 2.66
Family Households 5,772
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 0.41% 0.47%
Households 0.35% 0.42%
Families 0.25% 0.35%
Median Household Income   2.23%
Per Capita Income   2.28%

Bethlehem, PA 18020 - Peer Comparisons by Rank and Percentile

The table below compares 18020 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 # 188 89th
Population Density # 357 79th
Diversity Index # 184 89th
Median Household Income # 112 93rd
Per Capita Income # 173 90th

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

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