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/30099

30099

ZIP 30099 is in Duluth, Georgia, in Gwinnett County; area codes 470, 678, 943 and 770; Eastern time. Duluth has 5 ZIP codes; the others are 30095, 30096, 30097 and 30098.

Type
No street area
Time zone
America/New_York
County
Gwinnett
Coordinates
33.9595, -84.1050

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 30096, whose figures describe that area — not this ZIP code.

☼ Live from 30099 — Duluth, GA

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Local time: —

Where 30099 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 30099
  • 🔢 Type 30099 into a pocket calculator and turn it upside down: GGOOE — not quite a word, sorry.
  • ➕ As a number, 30,099 = 3 × 79 × 127. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111010110010011
  • 🏠 Its numerical neighbours: 30098 (Duluth, GA, 4 mi away) and 30101 (Acworth, GA, 35 mi away).
  • 🔄 Backwards, 30099 becomes 99003 — and that is a real ZIP code: Chattaroy, WA, 1,960 miles away.
  • 👥 11 other ZIP codes are made of exactly the same digits (00939, 03909, 09039, 30909, 39090, 90039, …). The farthest-flung twin is 09039 in APO AE, a military post office, 4,577 miles away.
  • 🧭 Farther south than 79% of all ZIP codes, and farther east than 60%.
  • 🎯895 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 30099 and you would come out at 33.96°S, 95.89°E — 1,164 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 25m of daylight. Shortest: 9h 53m.
🌙 The sky over 30099 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments9This ZIP9
Employees2,621This ZIP2,621
Annual payroll$231,903,000This ZIP$231,903,000

Land area

ZIP codes near 30099

ZIPCityDistance
30026 North Metro, GA 1.8 mi
30029 North Metro, GA 1.8 mi
30042 Lawrenceville, GA 2.1 mi
30096 Duluth, GA 2.5 mi
30044 Lawrenceville, GA 3.3 mi
30003 Norcross, GA 3.8 mi
30010 Norcross, GA 3.8 mi
30048 Lilburn, GA 3.8 mi
30091 Norcross, GA 3.8 mi
30098 Duluth, GA 3.8 mi

Find every ZIP code within 10 miles of 30099 →

Questions about this ZIP code

Where is ZIP code 30099?

30099 is in Duluth, Georgia, in Gwinnett County, part of the Atlanta-Sandy Springs-Roswell, GA metropolitan area. Its published point location is 33.9595, -84.1050.

What county is 30099 in?

30099 lies in Gwinnett County.

What area code is 30099?

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

What time zone is 30099 in?

30099 uses America/New_York.

What ZIP codes are near 30099?

The closest are 30026 (1.8 mi), 30029 (1.8 mi), 30042 (2.1 mi), 30096 (2.5 mi) and 30044 (3.3 mi).

Is 30099 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. “30099 ZIP Code — Duluth, Georgia (Gwinnett County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/30099

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/30099.json

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