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/77550

77550

ZIP 77550 is in Galveston, Texas, in Galveston County; Central time. Galveston has 6 ZIP codes; the others are 77551, 77552, 77553, 77554 and 77555.

Type
Standard
Time zone
America/Chicago
County
Galveston
Population
23,489
Coordinates
29.3079, -94.7693
☼ Live from 77550 — Galveston, TX

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 77550 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 77550
  • 🔢 Type 77550 into a pocket calculator and turn it upside down: OSSLL — not quite a word, sorry.
  • ➕ As a number, 77,550 = 2 × 3 × 5 × 5 × 11 × 47. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111011101110
  • 🏠 Its numerical neighbours: 77549 (Friendswood, TX, 30 mi away) and 77551 (Galveston, TX, 4 mi away).
  • 🔄 Backwards, 77550 becomes 05577, which is not a ZIP code at all.
  • 👥 20 other ZIP codes are made of exactly the same digits (05757, 05775, 07755, 50577, 55077, 55707, …). The farthest-flung twin is 05757 in Middletown Springs, VT, 1,544 miles away.
  • 🧭 Farther south than 95% of all ZIP codes, and farther west than 68%.
  • 🎯758 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77550 and you would come out at 29.31°S, 85.23°E — 1,400 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 01m of daylight. Shortest: 10h 16m.
  • 📏 At 7.6 square miles of land, 77550 is bigger than 24% of ZIP codes — room for about 5.7 Central Parks.
🌙 The sky over 77550 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population23,489This ZIP23,489
Households11,860This ZIP11,860
Housing units16,088This ZIP16,088
Median age39.6This ZIP39.6Texas35.6US 38.9
Median household income$45,047This ZIP$45,047Texas$78,476US $80,734
Median home value$325,900This ZIP$325,900Texas$283,800US $332,700
Median gross rent$1,205This ZIP$1,205Texas$1,403US $1,413
Bachelor's degree or higher34.5%This ZIP34.5%
Mean commute17.9 minThis ZIP17.9 min
Population density3,106.6 / sq miThis ZIP3,106.6 / sq mi

Business and tax activity

Business establishments697This ZIP697
Employees11,252This ZIP11,252
Annual payroll$478,794,000This ZIP$478,794,000
Tax returns filed9,600This ZIP9,600
Total adjusted gross income$749,420,000This ZIP$749,420,000

Land area

Land area7.56 sq miThis ZIP7.56 sq mi
Water area1.34 sq miThis ZIP1.34 sq mi

Other place names in 77550

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

ZIP codes near 77550

ZIPCityDistance
77555 Galveston, TX 0.5 mi
77592 Texas City, TX 2.4 mi
77553 Galveston, TX 2.5 mi
77551 Galveston, TX 4.3 mi
77590 Texas City, TX 10.1 mi
77554 Galveston, TX 10.6 mi
77650 Port Bolivar, TX 11.0 mi
77552 Galveston, TX 12.2 mi
77568 La Marque, TX 13.8 mi
77591 Texas City, TX 15.2 mi

Find every ZIP code within 10 miles of 77550 →

Questions about this ZIP code

Where is ZIP code 77550?

77550 is in Galveston, Texas, in Galveston County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 29.3079, -94.7693.

What county is 77550 in?

77550 lies in Galveston County.

What time zone is 77550 in?

77550 uses America/Chicago.

How many people live in 77550?

About 23,489 people live in ZIP code 77550, in 11,860 households, at 3,106.6 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 77550?

$45,047 a year, against $78,476 across Texas.

What ZIP codes are near 77550?

The closest are 77555 (0.5 mi), 77592 (2.4 mi), 77553 (2.5 mi), 77551 (4.3 mi) and 77590 (10.1 mi).

Is 77550 a PO Box ZIP code?

77550 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “77550 ZIP Code — Galveston, Texas (Galveston County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77550

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/77550.json

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