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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/77340

77340

ZIP 77340 is in Huntsville, Texas, in Walker County; area code 936; Central time. Huntsville has 8 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Walker
Metro area
Huntsville, TX
Population
37,517
Coordinates
30.6565, -95.5307
☼ Live from 77340 — Huntsville, TX

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Where 77340 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 77340
  • 🔢 Type 77340 into a pocket calculator and turn it upside down: OhELL — not quite a word, sorry.
  • ➕ As a number, 77,340 = 2 × 2 × 3 × 5 × 1289. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111000011100
  • 🏠 Its numerical neighbours: 77339 (Kingwood, TX, 46 mi away) and 77341 (Huntsville, TX, 3 mi away).
  • 🔄 Backwards, 77340 becomes 04377, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (03774, 04737, 04773, 07734, 30477, 30747, …). The farthest-flung twin is 04773 in Saint David, ME, 1,846 miles away.
  • 🧭 Farther south than 91% of all ZIP codes, and farther west than 70%.
  • 🎯657 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77340 and you would come out at 30.66°S, 84.47°E — 1,490 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 08m of daylight. Shortest: 10h 10m.
  • 📏 At 213.1 square miles of land, 77340 is bigger than 92% of ZIP codes — room for about 162 Central Parks.
🌙 The sky over 77340 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population37,517This ZIP37,517
Households13,614This ZIP13,614
Housing units15,621This ZIP15,621
Median age31.5This ZIP31.5Texas35.6US 38.9
Median household income$48,538This ZIP$48,538Texas$78,476US $80,734
Median home value$244,000This ZIP$244,000Texas$283,800US $332,700
Median gross rent$1,044This ZIP$1,044Texas$1,403US $1,413
Bachelor's degree or higher28.9%This ZIP28.9%
Mean commute25.8 minThis ZIP25.8 min
Population density176.0 / sq miThis ZIP176.0 / sq mi

Business and tax activity

Business establishments683This ZIP683
Employees10,412This ZIP10,412
Annual payroll$404,542,000This ZIP$404,542,000
Tax returns filed11,400This ZIP11,400
Total adjusted gross income$776,371,000This ZIP$776,371,000

Land area

Land area213.11 sq miThis ZIP213.11 sq mi
Water area2.28 sq miThis ZIP2.28 sq mi

Other place names in 77340

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

ZIP codes near 77340

ZIPCityDistance
77341 Huntsville, TX 3.3 mi
77343 Huntsville, TX 4.8 mi
77344 Huntsville, TX 4.8 mi
77348 Huntsville, TX 4.8 mi
77349 Huntsville, TX 4.8 mi
77342 Huntsville, TX 5.9 mi
77358 New Waverly, TX 9.4 mi
77320 Huntsville, TX 10.6 mi
77334 Dodge, TX 12.7 mi
77318 Willis, TX 14.7 mi

Find every ZIP code within 10 miles of 77340 →

Questions about this ZIP code

Where is ZIP code 77340?

77340 is in Huntsville, Texas, in Walker County, part of the Huntsville, TX micropolitan area. Its published point location is 30.6565, -95.5307.

What county is 77340 in?

77340 lies in Walker County.

What area code is 77340?

Huntsville uses area code 936, from NANPA's telephone records.

What time zone is 77340 in?

77340 uses America/Chicago.

How many people live in 77340?

About 37,517 people live in ZIP code 77340, in 13,614 households, at 176.0 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 77340?

$48,538 a year, against $78,476 across Texas.

What ZIP codes are near 77340?

The closest are 77341 (3.3 mi), 77343 (4.8 mi), 77344 (4.8 mi), 77348 (4.8 mi) and 77349 (4.8 mi).

Is 77340 a PO Box ZIP code?

77340 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77340 ZIP Code — Huntsville, Texas (Walker County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77340

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