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/30031

30031

ZIP 30031 is in Decatur, Georgia, in DeKalb County; area codes 404, 770, 678, 470 and 943; Eastern time. Decatur has 8 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
DeKalb
Coordinates
33.7748, -84.2963

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 30030, whose figures describe that area — not this ZIP code.

☼ Live from 30031 — Decatur, GA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 30031 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 30031
  • 🔢 Type 30031 into a pocket calculator and turn it upside down: IEOOE — not quite a word, sorry.
  • ➕ As a number, 30,031 = 59 × 509. Its digits add up to 7, a total 150 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111010101001111
  • 🏠 Its numerical neighbours: 30030 (Decatur, GA, 0 mi away) and 30032 (Decatur, GA, 3 mi away).
  • 🔄 Backwards, 30031 becomes 13003, which is not a ZIP code at all.
  • 👥 16 other ZIP codes are made of exactly the same digits (01033, 01330, 03031, 03103, 03301, 10033, …). The farthest-flung twin is 03301 in Concord, NH, 948 miles away.
  • 🧭 Farther south than 81% of all ZIP codes, and farther east than 59%.
  • 🎯893 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 30031 and you would come out at 33.77°S, 95.70°E — 1,175 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 24m of daylight. Shortest: 9h 54m.
🌙 The sky over 30031 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments12This ZIP12
Employees91This ZIP91
Annual payroll$5,787,000This ZIP$5,787,000

Land area

ZIP codes near 30031

ZIPCityDistance
30036 Decatur, GA 0.0 mi
30037 Decatur, GA 0.0 mi
30030 Decatur, GA 0.3 mi
30002 Avondale Estates, GA 2.0 mi
30322 Atlanta, GA 2.2 mi
30307 Atlanta, GA 2.2 mi
30317 Atlanta, GA 2.2 mi
30079 Scottdale, GA 2.4 mi
30033 Decatur, GA 2.8 mi
30032 Decatur, GA 3.0 mi

Find every ZIP code within 10 miles of 30031 →

Questions about this ZIP code

Where is ZIP code 30031?

30031 is in Decatur, Georgia, in DeKalb County, part of the Atlanta-Sandy Springs-Roswell, GA metropolitan area. Its published point location is 33.7748, -84.2963.

What county is 30031 in?

30031 lies in DeKalb County.

What area code is 30031?

Decatur uses area codes 404, 770, 678, 470 and 943, from NANPA's telephone records.

What time zone is 30031 in?

30031 uses America/New_York.

What ZIP codes are near 30031?

The closest are 30036 (0 mi), 30037 (0 mi), 30030 (0.3 mi), 30002 (2 mi) and 30322 (2.2 mi).

Is 30031 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. “30031 ZIP Code — Decatur, Georgia (DeKalb County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/30031

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/30031.json

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