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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/PA/SINNAMAHONING

Sinnamahoning ZIP code, Pennsylvania

The ZIP code for Sinnamahoning, PA is 15861.

USPS city name
1 ZIP code
Population
31

ZIP codes addressed as Sinnamahoning

ZIP codes with the USPS city name Sinnamahoning
ZIP City Type Population Median income Median home
15861 Sinnamahoning , PA Standard 84 $68,750 $147,500

Map of Sinnamahoning ZIP codes

The ZIP codes of Sinnamahoning, PA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Sinnamahoning

The nearest larger towns are Driftwood (45 people, 2.1 mi), Karthaus (212 people, 14 mi) and Prospect Park (288 people, 15 mi).

Towns near Sinnamahoning
TownPopulationDistance
St. Marys 12,529 23.8 mi
Clearfield 5,873 27.4 mi

More nearby: every ZIP code in Cameron County · Pennsylvania ZIP codes

Cite this page

zipcodes.pro. “Sinnamahoning, PA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/pa/sinnamahoning

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