Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/78066

78066

ZIP 78066 is Rio Medina, Texas, in Medina County; Central time.

Type
Standard
Time zone
America/Chicago
County
Medina
Population
259
Coordinates
29.4930, -98.8919
☼ Live from 78066 — Rio Medina, TX

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 78066 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.

★ Weird and wonderful facts about 78066
  • 🔢 Type 78066 into a pocket calculator and turn it upside down: ggOBL — not quite a word, sorry.
  • ➕ As a number, 78,066 = 2 × 3 × 3 × 4337. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011000011110010
  • 🏠 Its numerical neighbours: 78065 (Poteet, TX, 32 mi away) and 78067 (San Ygnacio, TX, 168 mi away).
  • 🔄 Backwards, 78066 becomes 66087 — and that is a real ZIP code: Troy, KS, 744 miles away.
  • 👥 19 other ZIP codes are made of exactly the same digits (06786, 06876, 07866, 60678, 60687, 66078, …). The farthest-flung twin is 06786 in Terryville, CT, 1,670 miles away.
  • 🧭 Farther south than 94% of all ZIP codes, and farther west than 78%.
  • 🎯714 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78066 and you would come out at 29.49°S, 81.11°E — 1,486 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 02m of daylight. Shortest: 10h 15m.
  • 📏 At 22.2 square miles of land, 78066 is bigger than 39% of ZIP codes — room for about 17 Central Parks.
🌙 The sky over 78066 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population259This ZIP259
Households139This ZIP139
Housing units139This ZIP139
Median age64.8This ZIP64.8Texas35.6US 38.9
Median household income$87,604This ZIP$87,604Texas$78,476US $80,734
Median home value$326,900This ZIP$326,900Texas$283,800US $332,700
Bachelor's degree or higher60.6%This ZIP60.6%
Population density11.6 / sq miThis ZIP11.6 / sq mi

Business and tax activity

Business establishments12This ZIP12
Employees41This ZIP41
Annual payroll$1,623,000This ZIP$1,623,000
Tax returns filed350This ZIP350
Total adjusted gross income$35,309,000This ZIP$35,309,000

Land area

Land area22.23 sq miThis ZIP22.23 sq mi
Water area0.05 sq miThis ZIP0.05 sq mi

ZIP codes near 78066

ZIPCityDistance
78056 Mico, TX 4.5 mi
78253 San Antonio, TX 6.5 mi
78009 Castroville, TX 8.7 mi
78254 San Antonio, TX 10.2 mi
78245 San Antonio, TX 11.4 mi
78023 Helotes, TX 12.1 mi
78039 La Coste, TX 13.0 mi
78251 San Antonio, TX 13.1 mi
78063 Pipe Creek, TX 13.6 mi
78250 San Antonio, TX 13.7 mi

Find every ZIP code within 10 miles of 78066 →

Questions about this ZIP code

Where is ZIP code 78066?

78066 is in Rio Medina, Texas, in Medina County, part of the San Antonio-New Braunfels, TX metropolitan area. Its published point location is 29.4930, -98.8919.

What county is 78066 in?

78066 lies in Medina County.

What time zone is 78066 in?

78066 uses America/Chicago.

How many people live in 78066?

About 259 people live in ZIP code 78066, in 139 households, at 11.6 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 78066?

$87,604 a year, against $78,476 across Texas.

What ZIP codes are near 78066?

The closest are 78056 (4.5 mi), 78253 (6.5 mi), 78009 (8.7 mi), 78254 (10.2 mi) and 78245 (11.4 mi).

Is 78066 a PO Box ZIP code?

78066 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “78066 ZIP Code — Rio Medina, Texas (Medina County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78066

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/78066.json

Underlying data is public domain or openly licensed — sources, vintages and licences.