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Where 18850 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 18850 into a pocket calculator and turn it upside down: OSBBI — not quite a word, sorry.
- ➕ As a number, 18,850 = 2 × 5 × 5 × 13 × 29. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100100110100010 - 🏠 Its numerical neighbours: 18848 (Towanda, PA, 8 mi away) and 18851 (Warren Center, PA, 16 mi away).
- 🔄 Backwards, 18850 becomes 05881, which is not a ZIP code at all.
- 👥 17 other ZIP codes are made of exactly the same digits (01588, 01885, 08518, 10588, 15088, 18058, …). The farthest-flung twin is 85018 in Phoenix, AZ, 2,010 miles away.
- 🧭 Farther north than 74% of all ZIP codes, and farther east than 83%.
- 🎯1,161 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 18850 and you would come out at 41.87°S, 103.53°E — 964 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 14m of daylight. Shortest: 9h 08m.
- 📏 At 62.3 square miles of land, 18850 is bigger than 66% of ZIP codes — room for about 47 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 2,070This ZIP2,070 |
|---|---|
| Households | 840This ZIP840 |
| Housing units | 1,015This ZIP1,015 |
| Median age | 45.6This ZIP45.6Pennsylvania40.9US 38.9 |
| Median household income | $71,739This ZIP$71,739Pennsylvania$77,971US $80,734 |
| Median home value | $175,200This ZIP$175,200Pennsylvania$254,500US $332,700 |
| Median gross rent | $925This ZIP$925Pennsylvania$1,209US $1,413 |
| Bachelor's degree or higher | 13.5%This ZIP13.5% |
| Mean commute | 27.8 minThis ZIP27.8 min |
| Population density | 33.2 / sq miThis ZIP33.2 / sq mi |
Business and tax activity
| Business establishments | 35This ZIP35 |
|---|---|
| Employees | 254This ZIP254 |
| Annual payroll | $15,318,000This ZIP$15,318,000 |
| Tax returns filed | 1,130This ZIP1,130 |
| Total adjusted gross income | $78,876,000This ZIP$78,876,000 |
Land area
| Land area | 62.33 sq miThis ZIP62.33 sq mi |
|---|---|
| Water area | 1.33 sq miThis ZIP1.33 sq mi |
ZIP codes near 18850
| ZIP | City | Distance |
|---|---|---|
18810 | Athens, PA | 4.3 mi |
18831 | Milan, PA | 6.6 mi |
18840 | Sayre, PA | 7.6 mi |
18817 | East Smithfield, PA | 7.7 mi |
18848 | Towanda, PA | 8.2 mi |
18854 | Wysox, PA | 8.2 mi |
18814 | Burlington, PA | 9.0 mi |
18837 | Rome, PA | 9.2 mi |
13840 | Smithboro, NY | 12.2 mi |
14892 | Waverly, NY | 12.4 mi |
Find every ZIP code within 10 miles of 18850 →
Questions about this ZIP code
Where is ZIP code 18850?
18850 is in Ulster, Pennsylvania, in Bradford County, part of the Sayre, PA micropolitan area. Its published point location is 41.8720, -76.4725.
What county is 18850 in?
18850 lies in Bradford County.
What area code is 18850?
Ulster uses area code 570, from NANPA's telephone records.
What time zone is 18850 in?
18850 uses America/New_York.
How many people live in 18850?
About 2,070 people live in ZIP code 18850, in 840 households, at 33.2 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 18850?
$71,739 a year, against $77,971 across Pennsylvania.
What ZIP codes are near 18850?
The closest are 18810 (4.3 mi), 18831 (6.6 mi), 18840 (7.6 mi), 18817 (7.7 mi) and 18848 (8.2 mi).
Is 18850 a PO Box ZIP code?
18850 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “18850 ZIP Code — Ulster, Pennsylvania (Bradford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18850
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/18850.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.