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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/77320

77320

ZIP 77320 is in Huntsville, Texas, mostly in Walker County; area code 936; Central time. Huntsville has 8 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Walker +1 more
Metro area
Huntsville, TX
Population
38,152
Coordinates
30.8077, -95.5580
☼ Live from 77320 — Huntsville, TX

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Local time: —

Where 77320 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 77320
  • 🔢 Type 77320 into a pocket calculator and turn it upside down: OZELL — not quite a word, sorry.
  • ➕ As a number, 77,320 = 2 × 2 × 2 × 5 × 1933. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111000001000
  • 🏠 Its numerical neighbours: 77318 (Willis, TX, 25 mi away) and 77325 (Kingwood, TX, 56 mi away).
  • 🔄 Backwards, 77320 becomes 02377, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (07723, 07732, 20737, 20773, 23707, 27370, …). The farthest-flung twin is 07732 in Highlands, NJ, 1,377 miles away.
  • 🧭 Farther south than 91% of all ZIP codes, and farther west than 70%.
  • 🎯646 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77320 and you would come out at 30.81°S, 84.44°E — 1,480 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 09m of daylight. Shortest: 10h 09m.
  • 📏 At 343.6 square miles of land, 77320 is bigger than 96% of ZIP codes — room for about 261 Central Parks.
🌙 The sky over 77320 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population38,152This ZIP38,152
Households10,586This ZIP10,586
Housing units12,838This ZIP12,838
Median age39.9This ZIP39.9Texas35.6US 38.9
Median household income$55,663This ZIP$55,663Texas$78,476US $80,734
Median home value$203,100This ZIP$203,100Texas$283,800US $332,700
Median gross rent$998This ZIP$998Texas$1,403US $1,413
Bachelor's degree or higher15.5%This ZIP15.5%
Mean commute25.8 minThis ZIP25.8 min
Population density111.0 / sq miThis ZIP111.0 / sq mi

Business and tax activity

Business establishments299This ZIP299
Employees2,181This ZIP2,181
Annual payroll$95,519,000This ZIP$95,519,000
Tax returns filed10,900This ZIP10,900
Total adjusted gross income$652,878,000This ZIP$652,878,000

Land area

Land area343.61 sq miThis ZIP343.61 sq mi
Water area17.58 sq miThis ZIP17.58 sq mi

Counties 77320 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Walker County 93.8%
San Jacinto County 6.2%

Other place names in 77320

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

ZIP codes near 77320

ZIPCityDistance
77342 Huntsville, TX 4.8 mi
77343 Huntsville, TX 5.8 mi
77344 Huntsville, TX 5.8 mi
77348 Huntsville, TX 5.8 mi
77349 Huntsville, TX 5.8 mi
77341 Huntsville, TX 7.6 mi
77367 Riverside, TX 10.3 mi
77340 Huntsville, TX 10.6 mi
77334 Dodge, TX 11.1 mi
77359 Oakhurst, TX 15.5 mi

Find every ZIP code within 10 miles of 77320 →

Questions about this ZIP code

Where is ZIP code 77320?

77320 is in Huntsville, Texas, in Walker County, part of the Huntsville, TX micropolitan area. Its published point location is 30.8077, -95.5580.

What county is 77320 in?

77320 spans 2 counties: Walker County and San Jacinto County. Most of it falls in Walker County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 77320?

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

What time zone is 77320 in?

77320 uses America/Chicago.

How many people live in 77320?

About 38,152 people live in ZIP code 77320, in 10,586 households, at 111.0 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 77320?

$55,663 a year, against $78,476 across Texas.

What ZIP codes are near 77320?

The closest are 77342 (4.8 mi), 77343 (5.8 mi), 77344 (5.8 mi), 77348 (5.8 mi) and 77349 (5.8 mi).

Is 77320 a PO Box ZIP code?

77320 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77320 ZIP Code — Huntsville, Texas (Walker County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77320

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