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/78131

78131

ZIP 78131 is in New Braunfels, Texas, in Comal County; area code 830; Central time. New Braunfels has 4 ZIP codes; the others are 78130, 78132 and 78135.

Type
No street area
Time zone
America/Chicago
County
Comal
Coordinates
29.7030, -98.1245

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 78130, whose figures describe that area — not this ZIP code.

☼ Live from 78131 — New Braunfels, TX

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Where 78131 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 78131
  • 🔢 Type 78131 into a pocket calculator and turn it upside down: IEIBL — not quite a word, sorry.
  • ➕ As a number, 78,131 = 23 × 43 × 79. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011000100110011
  • 🏠 Its numerical neighbours: 78130 (New Braunfels, TX, 3 mi away) and 78132 (New Braunfels, TX, 6 mi away).
  • 🔄 Backwards, 78131 becomes 13187, which is not a ZIP code at all.
  • 👥 21 other ZIP codes are made of exactly the same digits (11378, 11738, 11783, 17318, 17813, 17831, …). The farthest-flung twin is 11738 in Farmingville, NY, 1,602 miles away.
  • 🧭 Farther south than 94% of all ZIP codes, and farther west than 77%.
  • 🎯700 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78131 and you would come out at 29.70°S, 81.88°E — 1,489 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.
🌙 The sky over 78131 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments46This ZIP46
Employees334This ZIP334
Annual payroll$14,959,000This ZIP$14,959,000

Land area

ZIP codes near 78131

ZIPCityDistance
78135 New Braunfels, TX 0.0 mi
78130 New Braunfels, TX 3.4 mi
78132 New Braunfels, TX 5.6 mi
78123 Mc Queeney, TX 8.5 mi
78124 Marion, TX 10.2 mi
78108 Cibolo, TX 10.8 mi
78156 Seguin, TX 11.2 mi
78115 Geronimo, TX 12.0 mi
78266 San Antonio, TX 13.3 mi
78154 Schertz, TX 13.6 mi

Find every ZIP code within 10 miles of 78131 →

Questions about this ZIP code

Where is ZIP code 78131?

78131 is in New Braunfels, Texas, in Comal County, part of the San Antonio-New Braunfels, TX metropolitan area. Its published point location is 29.7030, -98.1245.

What county is 78131 in?

78131 lies in Comal County.

What area code is 78131?

New Braunfels uses area code 830, from NANPA's telephone records.

What time zone is 78131 in?

78131 uses America/Chicago.

What ZIP codes are near 78131?

The closest are 78135 (0 mi), 78130 (3.4 mi), 78132 (5.6 mi), 78123 (8.5 mi) and 78124 (10.2 mi).

Is 78131 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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zipcodes.pro. “78131 ZIP Code — New Braunfels, Texas (Comal County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78131

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