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zipcodes.pro — ZIP/77378

77378

ZIP 77378 is in Willis, Texas, mostly in Montgomery County; area code 936; Central time. Willis has 2 ZIP codes; the other is 77318.

Type
Standard
Time zone
America/Chicago
County
Montgomery +1 more
Population
17,629
Coordinates
30.4781, -95.3849
☼ Live from 77378 — Willis, TX

Weather right now

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Where 77378 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 77378
  • 🔢 Type 77378 into a pocket calculator and turn it upside down: BLELL — not quite a word, sorry.
  • ➕ As a number, 77,378 = 2 × 7 × 5527. Its digits add up to 32, a total 644 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111001000010
  • 🏠 Its numerical neighbours: 77377 (Tomball, TX, 34 mi away) and 77379 (Spring, TX, 32 mi away).
  • 🔄 Backwards, 77378 becomes 87377, which is not a ZIP code at all.
  • 👥 8 other ZIP codes are made of exactly the same digits (37778, 37877, 77387, 77837, 77873, 78377, …). The farthest-flung twin is 37778 in Lowland, TN, 803 miles away.
  • 🧭 Farther south than 92% of all ZIP codes, and farther west than 69%.
  • 🎯671 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77378 and you would come out at 30.48°S, 84.62°E — 1,487 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 07m of daylight. Shortest: 10h 10m.
  • 📏 At 89.1 square miles of land, 77378 is bigger than 75% of ZIP codes — room for about 68 Central Parks.
🌙 The sky over 77378 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population17,629This ZIP17,629
Households5,924This ZIP5,924
Housing units6,173This ZIP6,173
Median age35.1This ZIP35.1Texas35.6US 38.9
Median household income$71,143This ZIP$71,143Texas$78,476US $80,734
Median home value$199,800This ZIP$199,800Texas$283,800US $332,700
Median gross rent$1,532This ZIP$1,532Texas$1,403US $1,413
Bachelor's degree or higher18.4%This ZIP18.4%
Mean commute34.0 minThis ZIP34.0 min
Population density197.8 / sq miThis ZIP197.8 / sq mi

Business and tax activity

Business establishments287This ZIP287
Employees3,061This ZIP3,061
Annual payroll$134,616,000This ZIP$134,616,000
Tax returns filed8,770This ZIP8,770
Total adjusted gross income$628,494,000This ZIP$628,494,000

Land area

Land area89.11 sq miThis ZIP89.11 sq mi
Water area0.50 sq miThis ZIP0.50 sq mi

Counties 77378 spans

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

CountyShare of this ZIP
Montgomery County 60.5%
San Jacinto County 39.5%

Other place names in 77378

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

ZIP codes near 77378

ZIPCityDistance
77358 New Waverly, TX 5.7 mi
77303 Conroe, TX 6.9 mi
77318 Willis, TX 10.2 mi
77393 Spring, TX 11.3 mi
77301 Conroe, TX 12.0 mi
77328 Cleveland, TX 12.5 mi
77305 Conroe, TX 13.0 mi
77304 Conroe, TX 13.0 mi
77306 Conroe, TX 14.0 mi
77340 Huntsville, TX 15.1 mi

Find every ZIP code within 10 miles of 77378 →

Questions about this ZIP code

Where is ZIP code 77378?

77378 is in Willis, Texas, in Montgomery County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 30.4781, -95.3849.

What county is 77378 in?

77378 spans 2 counties: Montgomery County and San Jacinto County. Most of it falls in Montgomery 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 77378?

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

What time zone is 77378 in?

77378 uses America/Chicago.

How many people live in 77378?

About 17,629 people live in ZIP code 77378, in 5,924 households, at 197.8 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 77378?

$71,143 a year, against $78,476 across Texas.

What ZIP codes are near 77378?

The closest are 77358 (5.7 mi), 77303 (6.9 mi), 77318 (10.2 mi), 77393 (11.3 mi) and 77301 (12 mi).

Is 77378 a PO Box ZIP code?

77378 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77378 ZIP Code — Willis, Texas (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77378

Machine-readable version of these facts:

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