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/33831

33831

ZIP 33831 is in Bartow, Florida, in Polk County; area code 863; Eastern time. Bartow has 2 ZIP codes; the other is 33830.

Type
No street area
Time zone
America/New_York
County
Polk
Coordinates
27.8964, -81.8431

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 33830, whose figures describe that area — not this ZIP code.

☼ Live from 33831 — Bartow, FL

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 33831 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 33831
  • 🔢 Type 33831 into a pocket calculator and turn it upside down: IEBEE — not quite a word, sorry.
  • ➕ As a number, 33,831 = 3 × 3 × 3 × 7 × 179. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1000010000100111
  • 🏠 Its numerical neighbours: 33830 (Bartow, FL, 2 mi away) and 33834 (Bowling Green, FL, 19 mi away).
  • 🔄 Backwards, 33831 becomes 13833 — and that is a real ZIP code: Port Crane, NY, 1,046 miles away.
  • 👥 12 other ZIP codes are made of exactly the same digits (13338, 13833, 18333, 31833, 33138, 33183, …). The farthest-flung twin is 83313 in Bellevue, ID, 2,088 miles away.
  • 🧭 Farther south than 96% of all ZIP codes, and farther east than 67%.
  • 🎯1,262 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 33831 and you would come out at 27.90°S, 98.16°E — 1,091 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 55m of daylight. Shortest: 10h 22m.
🌙 The sky over 33831 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments18This ZIP18
Employees342This ZIP342
Annual payroll$15,420,000This ZIP$15,420,000

Land area

ZIP codes near 33831

ZIPCityDistance
33830 Bartow, FL 2.2 mi
33846 Highland City, FL 4.9 mi
33812 Lakeland, FL 6.1 mi
33813 Lakeland, FL 6.2 mi
33847 Homeland, FL 6.6 mi
33839 Eagle Lake, FL 7.6 mi
33880 Winter Haven, FL 7.8 mi
33840 Eaton Park, FL 8.7 mi
33803 Lakeland, FL 9.7 mi
33801 Lakeland, FL 10.2 mi

Find every ZIP code within 10 miles of 33831 →

Questions about this ZIP code

Where is ZIP code 33831?

33831 is in Bartow, Florida, in Polk County, part of the Lakeland-Winter Haven, FL metropolitan area. Its published point location is 27.8964, -81.8431.

What county is 33831 in?

33831 lies in Polk County.

What area code is 33831?

Bartow uses area code 863, from NANPA's telephone records.

What time zone is 33831 in?

33831 uses America/New_York.

What ZIP codes are near 33831?

The closest are 33830 (2.2 mi), 33846 (4.9 mi), 33812 (6.1 mi), 33813 (6.2 mi) and 33847 (6.6 mi).

Is 33831 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. “33831 ZIP Code — Bartow, Florida (Polk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/33831

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/33831.json

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