77617
ZIP 77617 is Gilchrist, Texas, in Galveston County; area code 409; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Galveston
- Metro area
- Houston-Pasadena-The Woodlands, TX
- Population
- 44
- Coordinates
- 29.5308, -94.4699
Weather right now
Asking the National Weather Service…
Where 77617 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.
- 🔢 Type 77617 into a pocket calculator and turn it upside down: LIgLL — not quite a word, sorry.
- ➕ 77617 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 28, a total 1,520 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10010111100110001 - 🏠 Its numerical neighbours: 77616 (Fred, TX, 73 mi away) and 77619 (Groves, TX, 44 mi away).
- 🔄 Backwards, 77617 becomes 71677 — and that is a real ZIP code: Winchester, AR, 341 miles away.
- 👥 4 other ZIP codes are made of exactly the same digits (17776, 61777, 71677, 76177). The farthest-flung twin is 17776 in Waterville, PA, 1,264 miles away.
- 🧭 Farther south than 94% of all ZIP codes, and farther west than 67%.
- 🎯749 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 77617 and you would come out at 29.53°S, 85.53°E — 1,402 miles from West Island, Cocos Islands, the nearest big city to that spot.
- ☀Longest day of the year: 14h 02m of daylight. Shortest: 10h 15m.
- 📏 At 5.2 square miles of land, 77617 is bigger than 19% of ZIP codes — room for about 4.0 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 44This ZIP44 |
|---|---|
| Households | 23This ZIP23 |
| Housing units | 96This ZIP96 |
| Median age | 58.1This ZIP58.1Texas35.6US 38.9 |
| Median household income | $75,703This ZIP$75,703Texas$78,476US $80,734 |
| Bachelor's degree or higher | 23.7%This ZIP23.7% |
| Population density | 8.4 / sq miThis ZIP8.4 / sq mi |
Land area
| Land area | 5.22 sq miThis ZIP5.22 sq mi |
|---|---|
| Water area | 1.72 sq miThis ZIP1.72 sq mi |
Other place names in 77617
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 77617
| ZIP | City | Distance |
|---|---|---|
77623 | High Island, TX | 4.0 mi |
77650 | Port Bolivar, TX | 13.3 mi |
77514 | Anahuac, TX | 14.4 mi |
77661 | Stowell, TX | 18.3 mi |
77665 | Winnie, TX | 18.3 mi |
77550 | Galveston, TX | 23.7 mi |
77555 | Galveston, TX | 23.9 mi |
77553 | Galveston, TX | 24.2 mi |
77592 | Texas City, TX | 24.2 mi |
77560 | Hankamer, TX | 24.3 mi |
Find every ZIP code within 10 miles of 77617 →
Questions about this ZIP code
Where is ZIP code 77617?
77617 is in Gilchrist, Texas, in Galveston County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 29.5308, -94.4699.
What county is 77617 in?
77617 lies in Galveston County.
What area code is 77617?
Gilchrist uses area code 409, from NANPA's telephone records.
What time zone is 77617 in?
77617 uses America/Chicago.
How many people live in 77617?
About 44 people live in ZIP code 77617, in 23 households, at 8.4 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 77617?
$75,703 a year, against $78,476 across Texas.
What ZIP codes are near 77617?
The closest are 77623 (4 mi), 77650 (13.3 mi), 77514 (14.4 mi), 77661 (18.3 mi) and 77665 (18.3 mi).
Is 77617 a PO Box ZIP code?
77617 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “77617 ZIP Code — Gilchrist, Texas (Galveston County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77617
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/77617.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.