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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/78543

78543

ZIP 78543 is Elsa, Texas, in Hidalgo County; area code 956; Central time.

Type
Standard
Time zone
America/Chicago
County
Hidalgo
Population
8,400
Coordinates
26.3012, -98.0051
☼ Live from 78543 — Elsa, TX

Weather right now

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NEXRAD radar
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Local time: —

Where 78543 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 78543
  • 🔢 Type 78543 into a pocket calculator and turn it upside down: EhSBL — not quite a word, sorry.
  • ➕ As a number, 78,543 = 3 × 3 × 3 × 2909. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001011001111
  • 🏠 Its numerical neighbours: 78542 (Edinburg, TX, 10 mi away) and 78545 (Falcon Heights, TX, 73 mi away).
  • 🔄 Backwards, 78543 becomes 34587, which is not a ZIP code at all.
  • 👥 50 other ZIP codes are made of exactly the same digits (34758, 34785, 35478, 35487, 35748, 37845, …). The farthest-flung twin is 83547 in Pollock, ID, 1,659 miles away.
  • 🧭 Farther south than 98% of all ZIP codes, and farther west than 77%.
  • 🎯935 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78543 and you would come out at 26.30°S, 81.99°E — 1,373 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 47m of daylight. Shortest: 10h 29m.
  • 📏 At 6.4 square miles of land, 78543 is bigger than 21% of ZIP codes — room for about 4.8 Central Parks.
🌙 The sky over 78543 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population8,400This ZIP8,400
Households2,834This ZIP2,834
Housing units3,129This ZIP3,129
Median age33.2This ZIP33.2Texas35.6US 38.9
Median household income$44,527This ZIP$44,527Texas$78,476US $80,734
Median home value$87,800This ZIP$87,800Texas$283,800US $332,700
Median gross rent$844This ZIP$844Texas$1,403US $1,413
Bachelor's degree or higher6.6%This ZIP6.6%
Mean commute15.2 minThis ZIP15.2 min
Population density1,321.4 / sq miThis ZIP1,321.4 / sq mi

Business and tax activity

Business establishments107This ZIP107
Employees1,968This ZIP1,968
Annual payroll$67,763,000This ZIP$67,763,000

Land area

Land area6.36 sq miThis ZIP6.36 sq mi
Water area0.00 sq mi

Other place names in 78543

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

ZIP codes near 78543

ZIPCityDistance
78558 La Blanca, TX 1.3 mi
78538 Edcouch, TX 5.0 mi
78599 Weslaco, TX 5.9 mi
78562 La Villa, TX 7.2 mi
78537 Donna, TX 9.4 mi
78542 Edinburg, TX 10.5 mi
78570 Mercedes, TX 10.7 mi
78539 Edinburg, TX 11.1 mi
78593 Santa Rosa, TX 11.4 mi
78502 Mcallen, TX 12.4 mi

Find every ZIP code within 10 miles of 78543 →

Questions about this ZIP code

Where is ZIP code 78543?

78543 is in Elsa, Texas, in Hidalgo County, part of the McAllen-Edinburg-Mission, TX metropolitan area. Its published point location is 26.3012, -98.0051.

What county is 78543 in?

78543 lies in Hidalgo County.

What area code is 78543?

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

What time zone is 78543 in?

78543 uses America/Chicago.

How many people live in 78543?

About 8,400 people live in ZIP code 78543, in 2,834 households, at 1,321.4 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 78543?

$44,527 a year, against $78,476 across Texas.

What ZIP codes are near 78543?

The closest are 78558 (1.3 mi), 78538 (5 mi), 78599 (5.9 mi), 78562 (7.2 mi) and 78537 (9.4 mi).

Is 78543 a PO Box ZIP code?

78543 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78543 ZIP Code — Elsa, Texas (Hidalgo County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78543

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