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/30156

30156

ZIP 30156 is in Kennesaw, Georgia, in Cobb County; area codes 404, 770, 678, 470 and 943; Eastern time. Kennesaw has 5 ZIP codes; the others are 30144, 30152, 30160 and 31144.

Type
No street area
Time zone
America/New_York
County
Cobb
Coordinates
34.0177, -84.6250

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 30152, whose figures describe that area — not this ZIP code.

☼ Live from 30156 — Kennesaw, GA

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Where 30156 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 30156
  • 🔢 Type 30156 into a pocket calculator and turn it upside down: gSIOE — not quite a word, sorry.
  • ➕ As a number, 30,156 = 2 × 2 × 3 × 7 × 359. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111010111001100
  • 🏠 Its numerical neighbours: 30154 (Douglasville, GA, 20 mi away) and 30157 (Dallas, GA, 17 mi away).
  • 🔄 Backwards, 30156 becomes 65103 — and that is a real ZIP code: Jefferson City, MO, 525 miles away.
  • 👥 66 other ZIP codes are made of exactly the same digits (01536, 01653, 03561, 05361, 06153, 06351, …). The farthest-flung twin is 03561 in Littleton, NH, 988 miles away.
  • 🧭 Farther south than 79% of all ZIP codes, and farther east than 57%.
  • 🎯868 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 30156 and you would come out at 34.02°S, 95.38°E — 1,194 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 30156 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments10This ZIP10
Employees80This ZIP80
Annual payroll$4,838,000This ZIP$4,838,000

Land area

ZIP codes near 30156

ZIPCityDistance
30160 Kennesaw, GA 0.0 mi
31144 Kennesaw, GA 0.7 mi
30152 Kennesaw, GA 2.2 mi
30144 Kennesaw, GA 2.4 mi
30101 Acworth, GA 4.9 mi
30064 Marietta, GA 5.4 mi
30102 Acworth, GA 5.9 mi
30006 Marietta, GA 6.2 mi
30090 Marietta, GA 6.3 mi
30066 Marietta, GA 6.9 mi

Find every ZIP code within 10 miles of 30156 →

Questions about this ZIP code

Where is ZIP code 30156?

30156 is in Kennesaw, Georgia, in Cobb County, part of the Atlanta-Sandy Springs-Roswell, GA metropolitan area. Its published point location is 34.0177, -84.6250.

What county is 30156 in?

30156 lies in Cobb County.

What area code is 30156?

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

What time zone is 30156 in?

30156 uses America/New_York.

What ZIP codes are near 30156?

The closest are 30160 (0 mi), 31144 (0.7 mi), 30152 (2.2 mi), 30144 (2.4 mi) and 30101 (4.9 mi).

Is 30156 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. “30156 ZIP Code — Kennesaw, Georgia (Cobb County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/30156

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/30156.json

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