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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/77640

77640

ZIP 77640 is in Port Arthur, Texas, in Jefferson County; area code 409; Central time. Port Arthur has 4 ZIP codes; the others are 77641, 77642 and 77643.

Type
Standard
Time zone
America/Chicago
County
Jefferson
Population
17,167
Coordinates
29.8805, -93.9412
☼ Live from 77640 — Port Arthur, TX

Weather right now

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Local time: —

Where 77640 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 77640
  • 🔢 Type 77640 into a pocket calculator and turn it upside down: OhgLL — not quite a word, sorry.
  • ➕ As a number, 77,640 = 2 × 2 × 2 × 3 × 5 × 647. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111101001000
  • 🏠 Its numerical neighbours: 77639 (Orangefield, TX, 14 mi away) and 77641 (Port Arthur, TX, 12 mi away).
  • 🔄 Backwards, 77640 becomes 04677 — and that is a real ZIP code: Sorrento, ME, 1,728 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (04677, 04776, 06477, 07647, 07746, 07764, …). The farthest-flung twin is 04776 in Sherman, ME, 1,766 miles away.
  • 🧭 Farther south than 93% of all ZIP codes, and farther west than 66%.
  • 🎯736 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77640 and you would come out at 29.88°S, 86.06°E — 1,406 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 04m of daylight. Shortest: 10h 13m.
  • 📏 At 37.3 square miles of land, 77640 is bigger than 51% of ZIP codes — room for about 28 Central Parks.
🌙 The sky over 77640 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population17,167This ZIP17,167
Households7,175This ZIP7,175
Housing units9,003This ZIP9,003
Median age39.2This ZIP39.2Texas35.6US 38.9
Median household income$50,973This ZIP$50,973Texas$78,476US $80,734
Median home value$109,600This ZIP$109,600Texas$283,800US $332,700
Median gross rent$1,254This ZIP$1,254Texas$1,403US $1,413
Bachelor's degree or higher15.0%This ZIP15.0%
Mean commute20.3 minThis ZIP20.3 min
Population density460.3 / sq miThis ZIP460.3 / sq mi

Business and tax activity

Business establishments313This ZIP313
Employees8,377This ZIP8,377
Annual payroll$623,820,000This ZIP$623,820,000
Tax returns filed6,710This ZIP6,710
Total adjusted gross income$311,677,000This ZIP$311,677,000

Land area

Land area37.29 sq miThis ZIP37.29 sq mi
Water area32.66 sq miThis ZIP32.66 sq mi

Other place names in 77640

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

ZIP codes near 77640

ZIPCityDistance
77619 Groves, TX 4.8 mi
77642 Port Arthur, TX 6.1 mi
77651 Port Neches, TX 6.9 mi
77643 Port Arthur, TX 7.1 mi
77627 Nederland, TX 8.6 mi
77611 Bridge City, TX 11.5 mi
77641 Port Arthur, TX 11.5 mi
77655 Sabine Pass, TX 11.8 mi
77630 Orange, TX 13.5 mi
77639 Orangefield, TX 13.5 mi

Find every ZIP code within 10 miles of 77640 →

Questions about this ZIP code

Where is ZIP code 77640?

77640 is in Port Arthur, Texas, in Jefferson County, part of the Beaumont-Port Arthur, TX metropolitan area. Its published point location is 29.8805, -93.9412.

What county is 77640 in?

77640 lies in Jefferson County.

What area code is 77640?

Port Arthur uses area code 409, from NANPA's telephone records.

What time zone is 77640 in?

77640 uses America/Chicago.

How many people live in 77640?

About 17,167 people live in ZIP code 77640, in 7,175 households, at 460.3 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 77640?

$50,973 a year, against $78,476 across Texas.

What ZIP codes are near 77640?

The closest are 77619 (4.8 mi), 77642 (6.1 mi), 77651 (6.9 mi), 77643 (7.1 mi) and 77627 (8.6 mi).

Is 77640 a PO Box ZIP code?

77640 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77640 ZIP Code — Port Arthur, Texas (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77640

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