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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/78550

78550

ZIP 78550 is in Harlingen, Texas, in Cameron County; area code 956; Central time. Harlingen has 4 ZIP codes; the others are 78551, 78552 and 78553.

Type
Standard
Time zone
America/Chicago
County
Cameron
Population
53,335
Coordinates
26.2557, -97.6635
☼ Live from 78550 — Harlingen, TX

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Local time: —

Where 78550 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 78550
  • 🔢 Type 78550 into a pocket calculator and turn it upside down: OSSBL — not quite a word, sorry.
  • ➕ As a number, 78,550 = 2 × 5 × 5 × 1571. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011001011010110
  • 🏠 Its numerical neighbours: 78549 (Hargill, TX, 28 mi away) and 78551 (Harlingen, TX, 4 mi away).
  • 🔄 Backwards, 78550 becomes 05587, which is not a ZIP code at all.
  • 👥 33 other ZIP codes are made of exactly the same digits (05758, 05857, 05875, 07855, 08557, 08755, …). The farthest-flung twin is 05857 in Newport Center, VT, 1,907 miles away.
  • 🧭 Farther south than 98% of all ZIP codes, and farther west than 76%.
  • 🎯939 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78550 and you would come out at 26.26°S, 82.34°E — 1,355 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 94.2 square miles of land, 78550 is bigger than 76% of ZIP codes — room for about 72 Central Parks.
🌙 The sky over 78550 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population53,335This ZIP53,335
Households19,733This ZIP19,733
Housing units22,468This ZIP22,468
Median age33.6This ZIP33.6Texas35.6US 38.9
Median household income$49,007This ZIP$49,007Texas$78,476US $80,734
Median home value$131,100This ZIP$131,100Texas$283,800US $332,700
Median gross rent$900This ZIP$900Texas$1,403US $1,413
Bachelor's degree or higher22.0%This ZIP22.0%
Mean commute18.0 minThis ZIP18.0 min
Population density566.3 / sq miThis ZIP566.3 / sq mi

Business and tax activity

Business establishments1,406This ZIP1,406
Employees31,846This ZIP31,846
Annual payroll$1,186,944,000This ZIP$1,186,944,000
Tax returns filed21,320This ZIP21,320
Total adjusted gross income$1,049,715,000This ZIP$1,049,715,000

Land area

Land area94.19 sq miThis ZIP94.19 sq mi
Water area0.84 sq miThis ZIP0.84 sq mi

Other place names in 78550

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

ZIP codes near 78550

ZIPCityDistance
78551 Harlingen, TX 3.6 mi
78535 Combes, TX 4.2 mi
78553 Harlingen, TX 4.9 mi
78552 Harlingen, TX 6.9 mi
78568 Lozano, TX 8.8 mi
78569 Lyford, TX 9.9 mi
78593 Santa Rosa, TX 10.0 mi
78586 San Benito, TX 10.1 mi
78594 Sebastian, TX 10.8 mi
78583 Rio Hondo, TX 12.1 mi

Find every ZIP code within 10 miles of 78550 →

Questions about this ZIP code

Where is ZIP code 78550?

78550 is in Harlingen, Texas, in Cameron County, part of the Brownsville-Harlingen, TX metropolitan area. Its published point location is 26.2557, -97.6635.

What county is 78550 in?

78550 lies in Cameron County.

What area code is 78550?

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

What time zone is 78550 in?

78550 uses America/Chicago.

How many people live in 78550?

About 53,335 people live in ZIP code 78550, in 19,733 households, at 566.3 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 78550?

$49,007 a year, against $78,476 across Texas.

What ZIP codes are near 78550?

The closest are 78551 (3.6 mi), 78535 (4.2 mi), 78553 (4.9 mi), 78552 (6.9 mi) and 78568 (8.8 mi).

Is 78550 a PO Box ZIP code?

78550 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78550 ZIP Code — Harlingen, Texas (Cameron County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78550

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