Postal reference / United States

18820Gibson, Pennsylvania

ZIP code 18820 is a United States postal code for Gibson, Pennsylvania. Its county association is Susquehanna County. The map reference point is at 41.8034, -75.6441.

State / territory
Pennsylvania
Recorded place name
Gibson
County association
Susquehanna
Estimated coordinate
41.8034, -75.6441
View on OpenStreetMap
ZIP prefix
188 · 37 ZIP codes share it
Data source
GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area
1.751 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

Need the last four digits?

ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.

Find ZIP+4

Explore Pennsylvania

Browse the other 2,175 ZIP codes recorded for Pennsylvania, sorted by code with place and county.

Pennsylvania directory

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
18823HarfordPASusquehanna3.2
18842South GibsonPASusquehanna4.8
18834New MilfordPASusquehanna5.8
18465ThompsonPASusquehanna6.0
18826KingsleyPASusquehanna7.6
18470Union DalePASusquehanna8.3
18825JacksonPASusquehanna8.3
18430Herrick CenterPASusquehanna9.0

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

Verify a mailing address

For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.

Open USPS address lookup