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Zip Code 15551 — Markleton, PA

15551 is a ZIP Code associated with Markleton, PA, located within Somerset. 15551 ranks #21 out of 35 ZIP codes in Somerset County by population (and #1285 out of 1,832 in PA). The area supports an estimated population of 609 residents across Data Pending housing units, with a population density of 9.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.884130, -79.267610)

Data MetricLocal Statistic
Postal / Zip Code15551
Primary CityMarkleton
State / ProvincePA
CountySomerset
Total Population609
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density9.5 people/sq mi
TimezoneAmerica/New_York

How 15551 Compares

MetricZIP 15551Somerset CountyPA State Average
Population60973,052 (Total)13,018,637 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density9.5 /sq mi----
County Pop Rank#21 of 35----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 15557Rockwood4.3 mi3,323N/A
Zip 15424Confluence5.9 mi2,011N/A
Zip 15540Fort Hill6.3 mi418N/A
Zip 15464Mill Run9.4 mi1,564N/A
Zip 15542Garrett10.1 mi1,088N/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 →