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/78594

78594

ZIP 78594 is Sebastian, Texas, in Willacy County; area code 956; Central time.

Type
Standard
Time zone
America/Chicago
County
Willacy
Metro area
Raymondville, TX
Population
1,206
Coordinates
26.3464, -97.8062
☼ Live from 78594 — Sebastian, TX

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 78594 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 78594
  • 🔢 Type 78594 into a pocket calculator and turn it upside down: hGSBL — not quite a word, sorry.
  • ➕ As a number, 78,594 = 2 × 3 × 13099. Its digits add up to 33, a total 456 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001100000010
  • 🏠 Its numerical neighbours: 78593 (Santa Rosa, TX, 5 mi away) and 78595 (Sullivan City, TX, 46 mi away).
  • 🔄 Backwards, 78594 becomes 49587, which is not a ZIP code at all.
  • 👥 36 other ZIP codes are made of exactly the same digits (45789, 45879, 45897, 47598, 47859, 47958, …). The farthest-flung twin is 98547 in Grayland, WA, 2,010 miles away.
  • 🧭 Farther south than 98% of all ZIP codes, and farther west than 76%.
  • 🎯933 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78594 and you would come out at 26.35°S, 82.19°E — 1,366 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 48m of daylight. Shortest: 10h 29m.
  • 📏 At 3.2 square miles of land, 78594 is bigger than 15% of ZIP codes — room for about 2.4 Central Parks.
🌙 The sky over 78594 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,206This ZIP1,206
Households495This ZIP495
Housing units559This ZIP559
Median age41.0This ZIP41.0Texas35.6US 38.9
Median household income$23,307This ZIP$23,307Texas$78,476US $80,734
Median home value$38,300This ZIP$38,300Texas$283,800US $332,700
Median gross rent$326This ZIP$326Texas$1,403US $1,413
Bachelor's degree or higher1.5%This ZIP1.5%
Mean commute23.6 minThis ZIP23.6 min
Population density380.6 / sq miThis ZIP380.6 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees14This ZIP14
Annual payroll$251,000This ZIP$251,000

Land area

Land area3.17 sq miThis ZIP3.17 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 78594

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 78594

ZIPCityDistance
78569 Lyford, TX 4.3 mi
78593 Santa Rosa, TX 5.0 mi
78562 La Villa, TX 6.8 mi
78535 Combes, TX 8.1 mi
78551 Harlingen, TX 8.8 mi
78538 Edcouch, TX 10.5 mi
78550 Harlingen, TX 10.8 mi
78561 Lasara, TX 10.8 mi
78552 Harlingen, TX 11.1 mi
78580 Raymondville, TX 11.3 mi

Find every ZIP code within 10 miles of 78594 →

Questions about this ZIP code

Where is ZIP code 78594?

78594 is in Sebastian, Texas, in Willacy County, part of the Raymondville, TX micropolitan area. Its published point location is 26.3464, -97.8062.

What county is 78594 in?

78594 lies in Willacy County.

What area code is 78594?

Sebastian uses area code 956, from NANPA's telephone records.

What time zone is 78594 in?

78594 uses America/Chicago.

How many people live in 78594?

About 1,206 people live in ZIP code 78594, in 495 households, at 380.6 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 78594?

$23,307 a year, against $78,476 across Texas.

What ZIP codes are near 78594?

The closest are 78569 (4.3 mi), 78593 (5 mi), 78562 (6.8 mi), 78535 (8.1 mi) and 78551 (8.8 mi).

Is 78594 a PO Box ZIP code?

78594 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “78594 ZIP Code — Sebastian, Texas (Willacy County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78594

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/78594.json

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