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zipcodes.pro — ZIP/15557

15557

ZIP 15557 is Rockwood, Pennsylvania, mostly in Somerset County; area code 814; Eastern time.

Type
Standard
Time zone
America/New_York
County
Somerset +1 more
Metro area
Somerset, PA
Population
3,323
Coordinates
39.9161, -79.2053
☼ Live from 15557 — Rockwood, PA

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Local time: —

Where 15557 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 15557
  • 🔢 Type 15557 into a pocket calculator and turn it upside down: LSSSI — not quite a word, sorry.
  • ➕ As a number, 15,557 = 47 × 331. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110011000101
  • 🏠 Its numerical neighbours: 15555 (Quecreek, PA, 14 mi away) and 15558 (Salisbury, PA, 13 mi away).
  • 🔄 Backwards, 15557 becomes 75551 — and that is a real ZIP code: Atlanta, TX, 955 miles away.
  • 👥 9 other ZIP codes are made of exactly the same digits (17555, 51557, 51575, 55175, 55571, 55751, …). The farthest-flung twin is 57551 in Martin, SD, 1,182 miles away.
  • 🧭 Farther north than 56% of all ZIP codes, and farther east than 76%.
  • 🎯1,025 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15557 and you would come out at 39.92°S, 100.79°E — 1,004 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 00m of daylight. Shortest: 9h 20m.
  • 📏 At 89.8 square miles of land, 15557 is bigger than 75% of ZIP codes — room for about 68 Central Parks.
🌙 The sky over 15557 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,323This ZIP3,323
Households1,393This ZIP1,393
Housing units1,984This ZIP1,984
Median age47.4This ZIP47.4Pennsylvania40.9US 38.9
Median household income$61,042This ZIP$61,042Pennsylvania$77,971US $80,734
Median home value$135,500This ZIP$135,500Pennsylvania$254,500US $332,700
Median gross rent$719This ZIP$719Pennsylvania$1,209US $1,413
Bachelor's degree or higher17.9%This ZIP17.9%
Mean commute25.6 minThis ZIP25.6 min
Population density37.0 / sq miThis ZIP37.0 / sq mi

Business and tax activity

Business establishments62This ZIP62
Employees1,245This ZIP1,245
Annual payroll$143,749,000This ZIP$143,749,000
Tax returns filed1,700This ZIP1,700
Total adjusted gross income$111,998,000This ZIP$111,998,000

Land area

Land area89.79 sq miThis ZIP89.79 sq mi
Water area0.07 sq miThis ZIP0.07 sq mi

Counties 15557 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Somerset County 99.2%
Fayette County 0.8%

Other place names in 15557

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 15557

ZIPCityDistance
15551 Markleton, PA 5.4 mi
15542 Garrett, PA 7.5 mi
15502 Hidden Valley, PA 7.9 mi
15540 Fort Hill, PA 8.4 mi
15510 Somerset, PA 9.4 mi
15501 Somerset, PA 9.4 mi
15485 Ursina, PA 9.5 mi
15424 Confluence, PA 10.1 mi
15622 Champion, PA 10.4 mi
15565 West Salisbury, PA 11.8 mi

Find every ZIP code within 10 miles of 15557 →

Questions about this ZIP code

Where is ZIP code 15557?

15557 is in Rockwood, Pennsylvania, in Somerset County, part of the Somerset, PA micropolitan area. Its published point location is 39.9161, -79.2053.

What county is 15557 in?

15557 spans 2 counties: Somerset County and Fayette County. Most of it falls in Somerset County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 15557?

Rockwood uses area code 814, from NANPA's telephone records.

What time zone is 15557 in?

15557 uses America/New_York.

How many people live in 15557?

About 3,323 people live in ZIP code 15557, in 1,393 households, at 37.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 15557?

$61,042 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 15557?

The closest are 15551 (5.4 mi), 15542 (7.5 mi), 15502 (7.9 mi), 15540 (8.4 mi) and 15510 (9.4 mi).

Is 15557 a PO Box ZIP code?

15557 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “15557 ZIP Code — Rockwood, Pennsylvania (Somerset County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15557

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/15557.json

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