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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/77840

77840

ZIP 77840 is in College Station, Texas, in Brazos County; area code 979; Central time. College Station has 6 ZIP codes; the others are 77841, 77842, 77843, 77844 and 77845.

Type
Standard
Time zone
America/Chicago
County
Brazos
Population
54,864
Coordinates
30.6115, -96.3233
☼ Live from 77840 — College Station, TX

Weather right now

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NEXRAD radar
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Local time: —

Where 77840 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 77840
  • 🔢 Type 77840 into a pocket calculator and turn it upside down: OhBLL — not quite a word, sorry.
  • ➕ As a number, 77,840 = 2 × 2 × 2 × 2 × 5 × 7 × 139. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011000000010000
  • 🏠 Its numerical neighbours: 77838 (Chriesman, TX, 27 mi away) and 77841 (College Station, TX, 3 mi away).
  • 🔄 Backwards, 77840 becomes 04877, which is not a ZIP code at all.
  • 👥 24 other ZIP codes are made of exactly the same digits (04787, 07748, 07847, 07874, 47708, 47807, …). The farthest-flung twin is 04787 in Westfield, ME, 1,869 miles away.
  • 🧭 Farther south than 91% of all ZIP codes, and farther west than 72%.
  • 🎯649 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77840 and you would come out at 30.61°S, 83.68°E — 1,473 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 08m of daylight. Shortest: 10h 10m.
  • 📏 At 10.0 square miles of land, 77840 is bigger than 27% of ZIP codes — room for about 7.6 Central Parks.
🌙 The sky over 77840 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population54,864This ZIP54,864
Households22,191This ZIP22,191
Housing units25,203This ZIP25,203
Median age22.0This ZIP22.0Texas35.6US 38.9
Median household income$30,377This ZIP$30,377Texas$78,476US $80,734
Median home value$244,800This ZIP$244,800Texas$283,800US $332,700
Median gross rent$1,108This ZIP$1,108Texas$1,403US $1,413
Bachelor's degree or higher44.5%This ZIP44.5%
Mean commute15.9 minThis ZIP15.9 min
Population density5,505.7 / sq miThis ZIP5,505.7 / sq mi

Business and tax activity

Business establishments923This ZIP923
Employees16,394This ZIP16,394
Annual payroll$542,968,000This ZIP$542,968,000
Tax returns filed13,550This ZIP13,550
Total adjusted gross income$618,303,000This ZIP$618,303,000

Land area

Land area9.97 sq miThis ZIP9.97 sq mi
Water area0.00 sq mi

Other place names in 77840

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

ZIP codes near 77840

ZIPCityDistance
77843 College Station, TX 1.0 mi
77841 College Station, TX 2.7 mi
77805 Bryan, TX 3.0 mi
77842 College Station, TX 3.0 mi
77844 College Station, TX 3.0 mi
77801 Bryan, TX 3.0 mi
77802 Bryan, TX 3.4 mi
77845 College Station, TX 4.5 mi
77806 Bryan, TX 5.2 mi
77881 Wellborn, TX 5.5 mi

Find every ZIP code within 10 miles of 77840 →

Questions about this ZIP code

Where is ZIP code 77840?

77840 is in College Station, Texas, in Brazos County, part of the College Station-Bryan, TX metropolitan area. Its published point location is 30.6115, -96.3233.

What county is 77840 in?

77840 lies in Brazos County.

What area code is 77840?

College Station uses area code 979, from NANPA's telephone records.

What time zone is 77840 in?

77840 uses America/Chicago.

How many people live in 77840?

About 54,864 people live in ZIP code 77840, in 22,191 households, at 5,505.7 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 77840?

$30,377 a year, against $78,476 across Texas.

What ZIP codes are near 77840?

The closest are 77843 (1 mi), 77841 (2.7 mi), 77805 (3 mi), 77842 (3 mi) and 77844 (3 mi).

Is 77840 a PO Box ZIP code?

77840 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “77840 ZIP Code — College Station, Texas (Brazos County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77840

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