Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/77523

77523

ZIP 77523 is in Baytown, Texas, mostly in Chambers County; area codes 281, 346, 832 and 713; Central time. Baytown has 4 ZIP codes; the others are 77520, 77521 and 77522.

Type
Standard
Time zone
America/Chicago
County
Chambers +1 more
Population
30,186
Coordinates
29.7663, -94.8658
☼ Live from 77523 — Baytown, TX

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 77523 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 77523
  • 🔢 Type 77523 into a pocket calculator and turn it upside down: EZSLL — not quite a word, sorry.
  • ➕ As a number, 77,523 = 3 × 25841. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010111011010011
  • 🏠 Its numerical neighbours: 77522 (Baytown, TX, 7 mi away) and 77530 (Channelview, TX, 15 mi away).
  • 🔄 Backwards, 77523 becomes 32577 — and that is a real ZIP code: Molino, FL, 452 miles away.
  • 👥 28 other ZIP codes are made of exactly the same digits (25773, 27357, 27375, 27537, 27573, 32577, …). The farthest-flung twin is 57732 in Deadwood, SD, 1,116 miles away.
  • 🧭 Farther south than 94% of all ZIP codes, and farther west than 68%.
  • 🎯726 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 77523 and you would come out at 29.77°S, 85.13°E — 1,429 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 04m of daylight. Shortest: 10h 14m.
  • 📏 At 85.3 square miles of land, 77523 is bigger than 74% of ZIP codes — room for about 65 Central Parks.
🌙 The sky over 77523 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population30,186This ZIP30,186
Households10,443This ZIP10,443
Housing units11,162This ZIP11,162
Median age35.8This ZIP35.8Texas35.6US 38.9
Median household income$124,188This ZIP$124,188Texas$78,476US $80,734
Median home value$372,100This ZIP$372,100Texas$283,800US $332,700
Median gross rent$1,702This ZIP$1,702Texas$1,403US $1,413
Bachelor's degree or higher28.0%This ZIP28.0%
Mean commute34.0 minThis ZIP34.0 min
Population density353.8 / sq miThis ZIP353.8 / sq mi

Business and tax activity

Business establishments495This ZIP495
Employees10,554This ZIP10,554
Annual payroll$691,346,000This ZIP$691,346,000
Tax returns filed14,050This ZIP14,050
Total adjusted gross income$1,494,415,000This ZIP$1,494,415,000

Land area

Land area85.33 sq miThis ZIP85.33 sq mi
Water area10.61 sq miThis ZIP10.61 sq mi

Counties 77523 spans

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

CountyShare of this ZIP
Chambers County 95.4%
Harris County 4.6%

Other place names in 77523

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

ZIP codes near 77523

ZIPCityDistance
77580 Mont Belvieu, TX 6.3 mi
77521 Baytown, TX 6.6 mi
77522 Baytown, TX 7.0 mi
77520 Baytown, TX 8.4 mi
77597 Wallisville, TX 11.0 mi
77572 La Porte, TX 11.5 mi
77562 Highlands, TX 12.2 mi
77571 La Porte, TX 12.7 mi
77530 Channelview, TX 15.0 mi
77514 Anahuac, TX 15.4 mi

Find every ZIP code within 10 miles of 77523 →

Questions about this ZIP code

Where is ZIP code 77523?

77523 is in Baytown, Texas, in Chambers County, part of the Houston-Pasadena-The Woodlands, TX metropolitan area. Its published point location is 29.7663, -94.8658.

What county is 77523 in?

77523 spans 2 counties: Chambers County and Harris County. Most of it falls in Chambers 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 77523?

Baytown uses area codes 281, 346, 832 and 713, from NANPA's telephone records.

What time zone is 77523 in?

77523 uses America/Chicago.

How many people live in 77523?

About 30,186 people live in ZIP code 77523, in 10,443 households, at 353.8 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 77523?

$124,188 a year, against $78,476 across Texas.

What ZIP codes are near 77523?

The closest are 77580 (6.3 mi), 77521 (6.6 mi), 77522 (7 mi), 77520 (8.4 mi) and 77597 (11 mi).

Is 77523 a PO Box ZIP code?

77523 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “77523 ZIP Code — Baytown, Texas (Chambers County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/77523

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/77523.json

Underlying data is public domain or openly licensed — sources, vintages and licences.