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Where 78851 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 78851 into a pocket calculator and turn it upside down: ISBBL — not quite a word, sorry.
- ➕ As a number, 78,851 = 29 × 2719. Its digits add up to 29, a total 1,296 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011010000000011 - 🏠 Its numerical neighbours: 78850 (D Hanis, TX, 168 mi away) and 78852 (Eagle Pass, TX, 135 mi away).
- 🔄 Backwards, 78851 becomes 15887, which is not a ZIP code at all.
- 👥 13 other ZIP codes are made of exactly the same digits (17858, 17885, 58718, 58781, 71858, 85178, …). The farthest-flung twin is 17858 in Numidia, PA, 1,603 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 81%.
- 🎯690 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78851 and you would come out at 30.22°S, 78.08°E — 1,384 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 06m of daylight. Shortest: 10h 12m.
- 📏 At 535.9 square miles of land, 78851 is bigger than 98% of ZIP codes — room for about 407 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 44This ZIP44 |
|---|---|
| Households | 44This ZIP44 |
| Housing units | 73This ZIP73 |
| Bachelor's degree or higher | 100.0%This ZIP100.0% |
| Population density | 0.1 / sq miThis ZIP0.1 / sq mi |
Land area
| Land area | 535.90 sq miThis ZIP535.90 sq mi |
|---|---|
| Water area | 0.00 sq miThis ZIP0.00 sq mi |
ZIP codes near 78851
| ZIP | City | Distance |
|---|---|---|
78871 | Langtry, TX | 28.4 mi |
79848 | Sanderson, TX | 29.1 mi |
79781 | Sheffield, TX | 29.1 mi |
78841 | Del Rio, TX | 37.3 mi |
76943 | Ozona, TX | 40.0 mi |
78837 | Comstock, TX | 43.0 mi |
79744 | Iraan, TX | 46.6 mi |
79752 | Mc Camey, TX | 63.9 mi |
79740 | Girvin, TX | 64.7 mi |
79735 | Fort Stockton, TX | 67.8 mi |
Find every ZIP code within 10 miles of 78851 →
Questions about this ZIP code
Where is ZIP code 78851?
78851 is in Dryden, Texas, in Terrell County. Its published point location is 30.2164, -101.9246.
What county is 78851 in?
78851 lies in Terrell County.
What time zone is 78851 in?
78851 uses America/Chicago.
How many people live in 78851?
About 44 people live in ZIP code 78851, in 44 households, at 0.1 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 78851?
The closest are 78871 (28.4 mi), 79848 (29.1 mi), 79781 (29.1 mi), 78841 (37.3 mi) and 76943 (40 mi).
Is 78851 a PO Box ZIP code?
78851 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78851 ZIP Code — Dryden, Texas (Terrell County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78851
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78851.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.