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Zip Code 18065 — Neffs, PA

18065 is a ZIP Code associated with Neffs, PA, located within Lehigh. 18065 ranks #25 out of 28 ZIP codes in Lehigh County by population (and #1298 out of 1,832 in PA). The area supports an estimated population of 577 residents across Data Pending housing units, with a population density of 1,337.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.698140, -75.610860)

Data MetricLocal Statistic
Postal / Zip Code18065
Primary CityNeffs
State / ProvincePA
CountyLehigh
Total Population577
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,337.0 people/sq mi
TimezoneAmerica/New_York

How 18065 Compares

MetricZIP 18065Lehigh CountyPA State Average
Population577386,389 (Total)13,018,637 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density1,337.0 /sq mi----
County Pop Rank#25 of 28----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 18078Schnecksville1.9 mi7,857N/A
Zip 18080Slatington2.9 mi11,226N/A
Zip 18037Coplay3.6 mi7,472N/A
Zip 18079Slatedale4.0 mi303N/A
Zip 18059Laurys Station4.3 mi744N/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 →