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zipcodes.pro — ZIP/77331

77331

ZIP 77331 is Coldspring, Texas, in San Jacinto County; area code 936; Central time.

Type
Standard
Time zone
America/Chicago
County
San Jacinto
Population
7,556
Coordinates
30.6177, -95.1844
☼ Live from 77331 — Coldspring, TX

Weather right now

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Local time: —

Where 77331 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 77331
  • 🔢 Type 77331 into a pocket calculator and turn it upside down: IEELL — not quite a word, sorry.
  • ➕ As a number, 77,331 = 3 × 149 × 173. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111000010011
  • 🏠 Its numerical neighbours: 77328 (Cleveland, TX, 15 mi away) and 77332 (Dallardsville, TX, 33 mi away).
  • 🔄 Backwards, 77331 becomes 13377, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (13737, 17337, 31773, 33177, 33771, 37137, …). The farthest-flung twin is 13737 in Bible School Park, NY, 1,320 miles away.
  • 🧭 Farther south than 91% of all ZIP codes, and farther west than 69%.
  • 🎯664 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77331 and you would come out at 30.62°S, 84.82°E — 1,489 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 08m of daylight. Shortest: 10h 10m.
  • 📏 At 171.1 square miles of land, 77331 is bigger than 88% of ZIP codes — room for about 130 Central Parks.
🌙 The sky over 77331 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population7,556This ZIP7,556
Households3,188This ZIP3,188
Housing units4,972This ZIP4,972
Median age50.1This ZIP50.1Texas35.6US 38.9
Median household income$62,321This ZIP$62,321Texas$78,476US $80,734
Median home value$246,200This ZIP$246,200Texas$283,800US $332,700
Median gross rent$729This ZIP$729Texas$1,403US $1,413
Bachelor's degree or higher20.0%This ZIP20.0%
Mean commute40.5 minThis ZIP40.5 min
Population density44.1 / sq miThis ZIP44.1 / sq mi

Business and tax activity

Business establishments81This ZIP81
Employees532This ZIP532
Annual payroll$23,078,000This ZIP$23,078,000
Tax returns filed3,220This ZIP3,220
Total adjusted gross income$276,402,000This ZIP$276,402,000

Land area

Land area171.15 sq miThis ZIP171.15 sq mi
Water area22.69 sq miThis ZIP22.69 sq mi

Other place names in 77331

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

ZIP codes near 77331

ZIPCityDistance
77364 Pointblank, TX 10.9 mi
77359 Oakhurst, TX 12.8 mi
77328 Cleveland, TX 14.7 mi
77371 Shepherd, TX 14.8 mi
77378 Willis, TX 15.3 mi
77335 Goodrich, TX 15.8 mi
77334 Dodge, TX 16.0 mi
77358 New Waverly, TX 16.2 mi
77360 Onalaska, TX 16.3 mi
77367 Riverside, TX 20.1 mi

Find every ZIP code within 10 miles of 77331 →

Questions about this ZIP code

Where is ZIP code 77331?

77331 is in Coldspring, Texas, in San Jacinto County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 30.6177, -95.1844.

What county is 77331 in?

77331 lies in San Jacinto County.

What area code is 77331?

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

What time zone is 77331 in?

77331 uses America/Chicago.

How many people live in 77331?

About 7,556 people live in ZIP code 77331, in 3,188 households, at 44.1 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 77331?

$62,321 a year, against $78,476 across Texas.

What ZIP codes are near 77331?

The closest are 77364 (10.9 mi), 77359 (12.8 mi), 77328 (14.7 mi), 77371 (14.8 mi) and 77378 (15.3 mi).

Is 77331 a PO Box ZIP code?

77331 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77331 ZIP Code — Coldspring, Texas (San Jacinto County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77331

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