Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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 — PREFIX/155

ZIP codes starting with 155

ZIP codes
40
States
PA
Largest city
Somerset, PA
Population
84,676

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 155xx

ZIP codes starting with 155
ZIP City Type Population Median income Median home
15501 Somerset , PA Standard 16,240 $59,245 $171,100
15502 Hidden Valley , PA Standard 113 $80,694 $528,400
15510 Somerset , PA Standard 2,118 — —
15520 Acosta , PA Standard 301 — $111,900
15521 Alum Bank , PA Standard 1,712 $53,947 $209,700
15522 Bedford , PA Standard 11,111 $57,029 $197,200
15530 Berlin , PA Standard 5,299 $59,205 $152,600
15531 Boswell , PA Standard 3,603 $60,855 $137,500
15532 Boynton , PA Standard 107 — $86,200
15533 Breezewood , PA Standard 1,222 $49,570 $184,800
15534 Buffalo Mills , PA Standard 884 $49,191 $159,400
15535 Clearville , PA Standard 1,994 $57,212 $205,200
15536 Crystal Spring , PA Standard 397 $61,458 $157,800
15537 Everett , PA Standard 8,083 $62,538 $197,000
15538 Fairhope , PA Standard 867 $75,833 $175,000
15539 Fishertown , PA Standard 158 $45,893 $135,200
15540 Fort Hill , PA Standard 418 $70,875 $206,800
15541 Friedens , PA Standard 3,112 $62,992 $178,500
15542 Garrett , PA Standard 1,088 $58,393 $105,800
15544 Gray , PA Standard 274 $89,536 $111,000
15545 Hyndman , PA Standard 2,562 $56,757 $129,600
15546 Jenners , PA Standard 437 — $67,600
15547 Jennerstown , PA Standard 862 $64,716 $196,300
15548 Kantner , PA No street area — — —
15549 Listie , PA No street area — — —
15550 Manns Choice , PA Standard 1,658 $53,750 $160,800
15551 Markleton , PA Standard 609 $67,727 $160,600
15552 Meyersdale , PA Standard 5,685 $65,551 $143,000
15553 New Baltimore , PA No street area — — —
15554 New Paris , PA Standard 2,726 $50,500 $273,000
15555 Quecreek , PA Standard 69 $76,250 $95,000
15557 Rockwood , PA Standard 3,323 $61,042 $135,500
15558 Salisbury , PA Standard 1,960 $64,038 $142,000
15559 Schellsburg , PA Standard 2,084 $61,902 $211,700
15560 Shanksville , PA Standard 142 $65,000 $120,800
15561 Sipesville , PA Standard 179 $92,813 $111,300
15562 Springs , PA Standard 344 $84,844 $167,000
15563 Stoystown , PA Standard 2,824 $62,411 $139,600
15564 Wellersburg , PA Standard 86 $56,250 $158,300
15565 West Salisbury , PA Standard 25 $98,750 $225,000

Cite this page

zipcodes.pro. “ZIP codes starting with 155.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/155

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