15635
ZIP 15635 is Hannastown, Pennsylvania, in Westmoreland County; area codes 724, 878 and 412; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Westmoreland
- Metro area
- Pittsburgh, PA
- Population
- 228
- Coordinates
- 40.3479, -79.5016
Weather right now
Asking the National Weather Service…
Where 15635 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 15635 into a pocket calculator and turn it upside down: SEgSI — not quite a word, sorry.
- ➕ As a number, 15,635 = 5 × 53 × 59. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11110100010011 - 🏠 Its numerical neighbours: 15634 (Grapeville, PA, 6 mi away) and 15636 (Harrison City, PA, 8 mi away).
- 🔄 Backwards, 15635 becomes 53651, which is not a ZIP code at all.
- 👥 28 other ZIP codes are made of exactly the same digits (13655, 15365, 15536, 15563, 16553, 31556, …). The farthest-flung twin is 56531 in Elbow Lake, MN, 915 miles away.
- 🧭 Farther north than 60% of all ZIP codes, and farther east than 75%.
- 🎯1,007 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 15635 and you would come out at 40.35°S, 100.50°E — 1,033 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 17m.
- 📏 At 0.284 square miles of land, 15635 is bigger than 3% of ZIP codes — about 137 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 228This ZIP228 |
|---|---|
| Households | 97This ZIP97 |
| Housing units | 97This ZIP97 |
| Median age | 35.3This ZIP35.3Pennsylvania40.9US 38.9 |
| Median home value | $162,500This ZIP$162,500Pennsylvania$254,500US $332,700 |
| Bachelor's degree or higher | 26.6%This ZIP26.6% |
| Population density | 802.8 / sq miThis ZIP802.8 / sq mi |
Business and tax activity
| Business establishments | 3This ZIP3 |
|---|---|
| Employees | 3This ZIP3 |
| Annual payroll | $63,000This ZIP$63,000 |
Land area
| Land area | 0.28 sq miThis ZIP0.28 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
ZIP codes near 15635
| ZIP | City | Distance |
|---|---|---|
15633 | Forbes Road, PA | 1.1 mi |
15662 | Luxor, PA | 1.3 mi |
15619 | Bovard, PA | 1.9 mi |
15624 | Crabtree, PA | 2.0 mi |
15601 | Greensburg, PA | 3.0 mi |
15605 | Greensburg, PA | 3.4 mi |
15685 | Southwest, PA | 3.4 mi |
15606 | Greensburg, PA | 3.8 mi |
15670 | New Alexandria, PA | 5.1 mi |
15634 | Grapeville, PA | 5.7 mi |
Find every ZIP code within 10 miles of 15635 →
Questions about this ZIP code
Where is ZIP code 15635?
15635 is in Hannastown, Pennsylvania, in Westmoreland County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.3479, -79.5016.
What county is 15635 in?
15635 lies in Westmoreland County.
What area code is 15635?
Hannastown uses area codes 724, 878 and 412, from NANPA's telephone records.
What time zone is 15635 in?
15635 uses America/New_York.
How many people live in 15635?
About 228 people live in ZIP code 15635, in 97 households, at 802.8 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 15635?
The closest are 15633 (1.1 mi), 15662 (1.3 mi), 15619 (1.9 mi), 15624 (2 mi) and 15601 (3 mi).
Is 15635 a PO Box ZIP code?
15635 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “15635 ZIP Code — Hannastown, Pennsylvania (Westmoreland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15635
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/15635.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.