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City ZIP codes · Pennsylvania

Lancaster, PA ZIP Codes

11 ZIP codes use the postal name Lancaster, Pennsylvania (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 7 for PO boxes or a single organization. Median household income runs from $75,862 in 17602 to $102,435 in 17601, 1.4 times as much (Census Bureau, ACS 2020-2024). Lancaster's most populous ZIP code is 17603, with 67,571 people (ACS 2020-2024); 8% of its land is in the city of Lancaster.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Lancaster's ZIP codes?

17601: $102k median household income17602: $76k median household income17603: $77k median household income17606: – median household income17603176011760217601: $102k median household income17602: $76k median household income17603: $77k median household income17606: – median household income17603176011760217601: $102k median household income17602: $76k median household income17603: $77k median household income17606: – median household income176031760117602
The 4 residential ZIP codes named Lancaster, 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 Lancaster's ZIP codes?

The highest median household income is in 17601 ($102,435), the lowest in 17602 ($75,862). Home values run from $262,400 in 17603 to $354,400 in 17601.

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

All 4 residential ZIP codes of Lancaster

Residential ZIP codes with the postal name Lancaster, PA, largest first (ACS 2020-2024); sort by any column
County
17603 Lancaster County 67,571 2,253 $77k $262k
17601 Lancaster County 56,382 1,682 $102k $354k
17602 Lancaster County 52,217 2,126 $76k $272k
17606 Lancaster County 404 9,395 – –

Download the 11 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 Lancaster

7 ZIP codes named Lancaster 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.

Lancaster, 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
17604Lancaster County
17605Lancaster County
17607Lancaster County
17608Lancaster County
17611Lancaster County
17622Lancaster County
17699Lancaster County

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

Which counties do Lancaster's ZIP codes reach?

Lancaster's residential ZIP codes lie in Lancaster County.

Which places do Lancaster's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Lancaster's residential ZIP codes cover Lancaster 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:

  • Lampeter census-designated 17602
  • Smoketown census-designated 17602
  • Witmer census-designated 17602

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

Which first three digits do Lancaster'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 Lancaster starts with 176.

Three-digit prefixes of Lancaster'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 Lancaster's
PrefixSectional centerHereAll codes
176 Harrisburg, PA (SCF 170) 11 11

All 11 ZIP codes that start with 176 are Lancaster's: 4 residential codes and 7 PO Box or unique codes, sorted at Harrisburg, PA (SCF 170).

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