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City ZIP codes · Pennsylvania

Bethlehem, PA ZIP Codes

6 ZIP codes use the postal name Bethlehem, Pennsylvania (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 2 for PO boxes or a single organization. Median household income runs from $60,800 in 18015 to $126,166 in 18020, 2.1 times as much (Census Bureau, ACS 2020-2024). Bethlehem's most populous ZIP code is 18017, with 40,640 people (ACS 2020-2024); 41% of its land is in the city of Bethlehem.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Bethlehem's ZIP codes?

18015: $61k median household income18017: $91k median household income18018: $75k median household income18020: $126k median household income1801518017180201801818015: $61k median household income18017: $91k median household income18018: $75k median household income18020: $126k median household income1801518017180201801818015: $61k median household income18017: $91k median household income18018: $75k median household income18020: $126k median household income18015180171802018018
The 4 residential ZIP codes named Bethlehem, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Bethlehem's ZIP codes?

The highest median household income is in 18020 ($126,166), the lowest in 18015 ($60,800). Home values run from $250,900 in 18018 to $370,200 in 18020.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 4 residential ZIP codes of Bethlehem

Residential ZIP codes with the postal name Bethlehem, PA, largest first (ACS 2020-2024); sort by any column
County
18017 Northampton County 40,640 2,425 $91k $336k
18015 Northampton County 34,852 1,503 $61k $282k
18018 Lehigh County 32,965 6,374 $75k $251k
18020 Northampton County 21,204 1,629 $126k $370k

Download the 6 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Bethlehem

2 ZIP codes named Bethlehem have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Bethlehem, PA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
18016Northampton County
18025Lehigh County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Bethlehem's ZIP codes reach?

Bethlehem's residential ZIP codes lie in 2 counties: Northampton County (3 ZIP codes mainly there), Lehigh County (1 ZIP code mainly there).

Which places do Bethlehem's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Bethlehem's residential ZIP codes cover Bethlehem itself and 3 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Bethlehem's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Bethlehem starts with 180.

Three-digit prefixes of Bethlehem's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Bethlehem's
PrefixSectional centerHereAll codes
180 Lehigh Valley, PA (SCF 180) 6 68

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.