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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/77551

77551

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

Type
Standard
Time zone
America/Chicago
County
Galveston
Population
21,696
Coordinates
29.2795, -94.8335
☼ Live from 77551 — Galveston, TX

Weather right now

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NEXRAD radar
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Local time: —

Where 77551 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 77551
  • 🔢 Type 77551 into a pocket calculator and turn it upside down: ISSLL — not quite a word, sorry.
  • ➕ 77551 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111011101111
  • 🏠 Its numerical neighbours: 77550 (Galveston, TX, 4 mi away) and 77552 (Galveston, TX, 8 mi away).
  • 🔄 Backwards, 77551 becomes 15577, which is not a ZIP code at all.
  • 👥 13 other ZIP codes are made of exactly the same digits (15757, 15775, 17557, 17575, 51577, 55717, …). The farthest-flung twin is 55771 in Orr, MN, 1,306 miles away.
  • 🧭 Farther south than 95% of all ZIP codes, and farther west than 68%.
  • 🎯759 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77551 and you would come out at 29.28°S, 85.17°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 4.0 square miles of land, 77551 is bigger than 17% of ZIP codes — room for about 3.0 Central Parks.
🌙 The sky over 77551 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population21,696This ZIP21,696
Households9,412This ZIP9,412
Housing units11,695This ZIP11,695
Median age39.4This ZIP39.4Texas35.6US 38.9
Median household income$58,344This ZIP$58,344Texas$78,476US $80,734
Median home value$290,600This ZIP$290,600Texas$283,800US $332,700
Median gross rent$1,352This ZIP$1,352Texas$1,403US $1,413
Bachelor's degree or higher30.6%This ZIP30.6%
Mean commute20.6 minThis ZIP20.6 min
Population density5,487.1 / sq miThis ZIP5,487.1 / sq mi

Business and tax activity

Business establishments399This ZIP399
Employees6,054This ZIP6,054
Annual payroll$192,426,000This ZIP$192,426,000
Tax returns filed8,810This ZIP8,810
Total adjusted gross income$591,923,000This ZIP$591,923,000

Land area

Land area3.95 sq miThis ZIP3.95 sq mi
Water area1.02 sq miThis ZIP1.02 sq mi

Other place names in 77551

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

ZIP codes near 77551

ZIPCityDistance
77592 Texas City, TX 4.1 mi
77555 Galveston, TX 4.1 mi
77553 Galveston, TX 4.2 mi
77550 Galveston, TX 4.3 mi
77554 Galveston, TX 6.3 mi
77552 Galveston, TX 7.8 mi
77590 Texas City, TX 8.5 mi
77568 La Marque, TX 11.1 mi
77563 Hitchcock, TX 12.1 mi
77591 Texas City, TX 13.0 mi

Find every ZIP code within 10 miles of 77551 →

Questions about this ZIP code

Where is ZIP code 77551?

77551 is in Galveston, Texas, in Galveston County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 29.2795, -94.8335.

What county is 77551 in?

77551 lies in Galveston County.

What time zone is 77551 in?

77551 uses America/Chicago.

How many people live in 77551?

About 21,696 people live in ZIP code 77551, in 9,412 households, at 5,487.1 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 77551?

$58,344 a year, against $78,476 across Texas.

What ZIP codes are near 77551?

The closest are 77592 (4.1 mi), 77555 (4.1 mi), 77553 (4.2 mi), 77550 (4.3 mi) and 77554 (6.3 mi).

Is 77551 a PO Box ZIP code?

77551 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77551 ZIP Code — Galveston, Texas (Galveston County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77551

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