Erwinna, PA 18920 ZIP Code Profile

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Erwinna, PA

ZIP Code 18920: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Erwinna, PA 18920

  • ZIP Code Type: STANDARD
  • County: Bucks County
  • Centroid: Latitude 40.491, Longitude -75.079
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 28
  • PO Box Addresses: 156
  • Residential Addresses: 213
    • Multi-Family Addresses: 0
    • Single Family Addresses: 213

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

EXTREMELY LOCAL Demographic 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 demographic data.


18920 ZIP Code Map

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Erwinna, PA 18920 Data & Demographics (As of July 1, 2017)


Total Population 458
Daytime Population: Workers 143
Daytime Population: Residents 236
Total Daytime Population (TDP) 379
Ratio TDP/Total Population1 0.83
Population in Households 458
Population in Familes 368
Population in Group Qrtrs 0
Population Density2 100
Diversity Index3 12


Median Household Income $105,082
Average Household Income $142,043
Per Capita Income $62,958


Total Housing Units 238 (100%)
Owner Occupied HU 160 (67.2%)
Renter Occupied HU 43 (18.1%)
Vacant Housing Units 35 (14.7%)
Median Home Value $445,833
Average Home Value $506,563


Total Households 203
Average Household Size 2.26
Family Households 138
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 0.09% 0.17%
Households 0.14% 0.2%
Families 0.1% 0.14%
Median Household Income   1.05%
Per Capita Income   1.88%

Erwinna, PA 18920 - Peer Comparisons by Rank and Percentile

The table below compares 18920 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 # 1327 20th
Population Density # 1120 33rd
Diversity Index # 754 55th
Median Household Income # 52 97th
Per Capita Income # 35 98th

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

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