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/70821

70821

ZIP 70821 is in Baton Rouge, Louisiana, in East Baton Rouge Parish; area code 225; Central time. Baton Rouge has 42 ZIP codes in all.

Type
No street area
Time zone
America/Chicago
Metro area
Baton Rouge, LA
Coordinates
30.4613, -91.0447

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 70815, whose figures describe that area — not this ZIP code.

☼ Live from 70821 — Baton Rouge, LA

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Where 70821 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 70821
  • 🔢 Type 70821 into a pocket calculator and turn it upside down: IZBOL — not quite a word, sorry.
  • ➕ As a number, 70,821 = 3 × 3 × 3 × 43 × 61. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10001010010100101
  • 🏠 Its numerical neighbours: 70820 (Baton Rouge, LA, 12 mi away) and 70822 (Baton Rouge, LA, 4 mi away).
  • 🔄 Backwards, 70821 becomes 12807, which is not a ZIP code at all.
  • 👥 67 other ZIP codes are made of exactly the same digits (01827, 02187, 02718, 02817, 02871, 07821, …). The farthest-flung twin is 02187 in Milton Village, MA, 1,373 miles away.
  • 🧭 Farther south than 92% of all ZIP codes, and farther west than 59%.
  • 🎯774 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 70821 and you would come out at 30.46°S, 88.96°E — 1,361 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 07m of daylight. Shortest: 10h 11m.
🌙 The sky over 70821 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments51This ZIP51
Employees1,256This ZIP1,256
Annual payroll$104,703,000This ZIP$104,703,000

Land area

ZIP codes near 70821

ZIPCityDistance
70815 Baton Rouge, LA 1.4 mi
70814 Baton Rouge, LA 1.9 mi
70819 Baton Rouge, LA 2.3 mi
70816 Baton Rouge, LA 2.6 mi
70827 Baton Rouge, LA 2.9 mi
70704 Baker, LA 4.3 mi
70822 Baton Rouge, LA 4.3 mi
70823 Baton Rouge, LA 4.3 mi
70826 Baton Rouge, LA 4.3 mi
70831 Baton Rouge, LA 4.3 mi

Find every ZIP code within 10 miles of 70821 →

Questions about this ZIP code

Where is ZIP code 70821?

70821 is in Baton Rouge, Louisiana, in East Baton Rouge Parish, part of the Baton Rouge, LA metropolitan area. Its published point location is 30.4613, -91.0447.

What county is 70821 in?

70821 lies in East Baton Rouge Parish.

What area code is 70821?

Baton Rouge uses area code 225, from NANPA's telephone records.

What time zone is 70821 in?

70821 uses America/Chicago.

What ZIP codes are near 70821?

The closest are 70815 (1.4 mi), 70814 (1.9 mi), 70819 (2.3 mi), 70816 (2.6 mi) and 70827 (2.9 mi).

Is 70821 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.

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Cite this page

zipcodes.pro. “70821 ZIP Code — Baton Rouge, Louisiana (East Baton Rouge Parish).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/70821

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/70821.json

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