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Where 78879 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 78879 into a pocket calculator and turn it upside down: GLBBL — not quite a word, sorry.
- ➕ As a number, 78,879 = 3 × 26293. Its digits add up to 39, a total 25 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011010000011111 - 🏠 Its numerical neighbours: 78877 (Quemado, TX, 72 mi away) and 78880 (Rocksprings, TX, 40 mi away).
- 🔄 Backwards, 78879 becomes 97887, which is not a ZIP code at all.
- 👥 2 other ZIP codes are made of exactly the same digits (77988, 79788). The farthest-flung twin is 79788 in Wickett, TX, 237 miles away.
- 🧭 Farther south than 94% of all ZIP codes, and farther west than 79%.
- 🎯706 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78879 and you would come out at 29.65°S, 80.29°E — 1,460 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 03m of daylight. Shortest: 10h 14m.
- 📏 At 21.9 square miles of land, 78879 is bigger than 39% of ZIP codes — room for about 17 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 184This ZIP184 |
|---|---|
| Households | 71This ZIP71 |
| Housing units | 175This ZIP175 |
| Median age | 60.0This ZIP60.0Texas35.6US 38.9 |
| Median household income | $101,484This ZIP$101,484Texas$78,476US $80,734 |
| Median home value | $1,046,900This ZIP$1,046,900Texas$283,800US $332,700 |
| Bachelor's degree or higher | 53.2%This ZIP53.2% |
| Population density | 8.4 / sq miThis ZIP8.4 / sq mi |
Business and tax activity
| Business establishments | 6This ZIP6 |
|---|---|
| Employees | 46This ZIP46 |
| Annual payroll | $1,330,000This ZIP$1,330,000 |
| Tax returns filed | 140This ZIP140 |
| Total adjusted gross income | $14,695,000This ZIP$14,695,000 |
Land area
| Land area | 21.90 sq miThis ZIP21.90 sq mi |
|---|---|
| Water area | 0.12 sq miThis ZIP0.12 sq mi |
Counties 78879 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Real County | 76.8% |
| Uvalde County | 23.2% |
ZIP codes near 78879
| ZIP | City | Distance |
|---|---|---|
78838 | Concan, TX | 7.8 mi |
78873 | Leakey, TX | 11.7 mi |
78884 | Utopia, TX | 12.3 mi |
78885 | Vanderpool, TX | 15.9 mi |
78833 | Camp Wood, TX | 16.0 mi |
78881 | Sabinal, TX | 22.4 mi |
78828 | Barksdale, TX | 22.5 mi |
78801 | Uvalde, TX | 22.6 mi |
78883 | Tarpley, TX | 23.7 mi |
78055 | Medina, TX | 26.1 mi |
Find every ZIP code within 10 miles of 78879 →
Questions about this ZIP code
Where is ZIP code 78879?
78879 is in Rio Frio, Texas, in Real County. Its published point location is 29.6471, -99.7113.
What county is 78879 in?
78879 spans 2 counties: Real County and Uvalde County. Most of it falls in Real 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 78879?
Rio Frio uses area code 830, from NANPA's telephone records.
What time zone is 78879 in?
78879 uses America/Chicago.
How many people live in 78879?
About 184 people live in ZIP code 78879, in 71 households, at 8.4 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 78879?
$101,484 a year, against $78,476 across Texas.
What ZIP codes are near 78879?
The closest are 78838 (7.8 mi), 78873 (11.7 mi), 78884 (12.3 mi), 78885 (15.9 mi) and 78833 (16 mi).
Is 78879 a PO Box ZIP code?
78879 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78879 ZIP Code — Rio Frio, Texas (Real County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78879
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78879.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.