Home > PA > Northumberland County > Locust Gap > Zip 17840

Zip Code 17840 — Locust Gap, PA

17840 is a ZIP Code associated with Locust Gap, PA, located within Northumberland. The postal region supports an estimated population of 188 residents across Data Pending housing units, with a population density of 36.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.775370, -76.432910)

Data MetricLocal Statistic
Postal / Zip Code17840
Primary CityLocust Gap
State / ProvincePA
CountyNorthumberland
Total Population188
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density36.6 people/sq mi
TimezoneAmerica/New_York

How 17840 Compares

MetricZIP 17840Northumberland CountyPA State Average
Population18883,04213,018,637
Median IncomeData PendingN/AN/A
Population Density36.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 17834Kulpmont1.8 mi3,480N/A
Zip 17851Mount Carmel1.9 mi7,234N/A
Zip 17832Marion Heights2.4 mi578N/A
Zip 17943Lavelle3.0 mi42N/A
Zip 17945Locustdale3.1 mi133N/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 →