15638
ZIP 15638 is Hostetter, Pennsylvania, in Westmoreland County; area code 724; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Westmoreland
- Metro area
- Pittsburgh, PA
- Population
- 104
- Coordinates
- 40.2646, -79.4016
Weather right now
Asking the National Weather Service…
Where 15638 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.
- 🔢 Type 15638 into a pocket calculator and turn it upside down: BEgSI — not quite a word, sorry.
- ➕ As a number, 15,638 = 2 × 7 × 1117. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11110100010110 - 🏠 Its numerical neighbours: 15637 (Herminie, PA, 16 mi away) and 15639 (Hunker, PA, 11 mi away).
- 🔄 Backwards, 15638 becomes 83651 — and that is a real ZIP code: Nampa, ID, 1,911 miles away.
- 👥 49 other ZIP codes are made of exactly the same digits (13658, 13685, 13856, 13865, 15368, 15683, …). The farthest-flung twin is 83651 in Nampa, ID, 1,911 miles away.
- 🧭 Farther north than 59% of all ZIP codes, and farther east than 76%.
- 🎯1,013 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 15638 and you would come out at 40.26°S, 100.60°E — 1,025 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
- 📏 At 0.154 square miles of land, 15638 is bigger than 2% of ZIP codes — about 75 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 104This ZIP104 |
|---|---|
| Households | 81This ZIP81 |
| Housing units | 140This ZIP140 |
| Median age | 71.3This ZIP71.3Pennsylvania40.9US 38.9 |
| Bachelor's degree or higher | 0.0% |
| Population density | 675.3 / sq miThis ZIP675.3 / sq mi |
Land area
| Land area | 0.15 sq miThis ZIP0.15 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 15638
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 15638
| ZIP | City | Distance |
|---|---|---|
15650 | Latrobe, PA | 1.0 mi |
15693 | Whitney, PA | 1.1 mi |
15696 | Youngstown, PA | 2.2 mi |
15676 | Pleasant Unity, PA | 3.4 mi |
15661 | Loyalhanna, PA | 4.5 mi |
15620 | Bradenville, PA | 5.2 mi |
15689 | United, PA | 5.5 mi |
15621 | Calumet, PA | 5.8 mi |
15619 | Bovard, PA | 6.3 mi |
15674 | Norvelt, PA | 6.4 mi |
Find every ZIP code within 10 miles of 15638 →
Questions about this ZIP code
Where is ZIP code 15638?
15638 is in Hostetter, Pennsylvania, in Westmoreland County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.2646, -79.4016.
What county is 15638 in?
15638 lies in Westmoreland County.
What area code is 15638?
Hostetter uses area code 724, from NANPA's telephone records.
What time zone is 15638 in?
15638 uses America/New_York.
How many people live in 15638?
About 104 people live in ZIP code 15638, in 81 households, at 675.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 15638?
The closest are 15650 (1 mi), 15693 (1.1 mi), 15696 (2.2 mi), 15676 (3.4 mi) and 15661 (4.5 mi).
Is 15638 a PO Box ZIP code?
15638 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “15638 ZIP Code — Hostetter, Pennsylvania (Westmoreland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15638
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/15638.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.