Home > PA > Susquehanna County > Forest City > Zip 18421

Zip Code 18421 — Forest City, PA

18421 is a ZIP Code associated with Forest City, PA, located within Susquehanna. The postal region supports an estimated population of 4,603 residents across Data Pending housing units, with a population density of 47.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.663370, -75.469100)

Data MetricLocal Statistic
Postal / Zip Code18421
Primary CityForest City
State / ProvincePA
CountySusquehanna
Total Population4,603
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density47.7 people/sq mi
TimezoneAmerica/New_York

How 18421 Compares

MetricZIP 18421Susquehanna CountyPA State Average
Population4,60344,07913,018,637
Median IncomeData PendingN/AN/A
Population Density47.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 18413Clifford3.5 mi81N/A
Zip 18407Carbondale5.4 mi14,445N/A
Zip 18430Herrick Center5.5 mi57N/A
Zip 18470Union Dale5.8 mi2,139N/A
Zip 18472Waymart6.3 mi6,601N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →