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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/77333

77333

ZIP 77333 is Dobbin, Texas, in Montgomery County; area code 936; Central time.

Type
No street area
Time zone
America/Chicago
County
Montgomery
Coordinates
30.3365, -95.7723

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 77316, whose figures describe that area — not this ZIP code.

☼ Live from 77333 — Dobbin, TX

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Where 77333 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 77333
  • 🔢 Type 77333 into a pocket calculator and turn it upside down: EEELL — not quite a word, sorry.
  • ➕ As a number, 77,333 = 17 × 4549. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111000010101
  • 🏠 Its numerical neighbours: 77332 (Dallardsville, TX, 71 mi away) and 77334 (Dodge, TX, 39 mi away).
  • 🔄 Backwards, 77333 becomes 33377, which is not a ZIP code at all.
  • 👥 6 other ZIP codes are made of exactly the same digits (33737, 33773, 37337, 37373, 37733, 73733). The farthest-flung twin is 33737 in Saint Petersburg, FL, 805 miles away.
  • 🧭 Farther south than 92% of all ZIP codes, and farther west than 71%.
  • 🎯675 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77333 and you would come out at 30.34°S, 84.23°E — 1,492 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 06m of daylight. Shortest: 10h 11m.
🌙 The sky over 77333 today
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🌋 Shake report
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Source: USGS.

Land area

ZIP codes near 77333

ZIPCityDistance
77363 Plantersville, TX 4.8 mi
77316 Montgomery, TX 5.5 mi
77353 Magnolia, TX 8.9 mi
77356 Montgomery, TX 9.3 mi
77354 Magnolia, TX 11.8 mi
77355 Magnolia, TX 12.5 mi
77362 Pinehurst, TX 13.8 mi
77318 Willis, TX 15.1 mi
77304 Conroe, TX 15.3 mi
77868 Navasota, TX 16.5 mi

Find every ZIP code within 10 miles of 77333 →

Questions about this ZIP code

Where is ZIP code 77333?

77333 is in Dobbin, Texas, in Montgomery County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 30.3365, -95.7723.

What county is 77333 in?

77333 lies in Montgomery County.

What area code is 77333?

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

What time zone is 77333 in?

77333 uses America/Chicago.

What ZIP codes are near 77333?

The closest are 77363 (4.8 mi), 77316 (5.5 mi), 77353 (8.9 mi), 77356 (9.3 mi) and 77354 (11.8 mi).

Is 77333 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

Download or cite

Cite this page

zipcodes.pro. “77333 ZIP Code — Dobbin, Texas (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77333

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