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/03111

03111

ZIP 03111 is in Manchester, New Hampshire, in Hillsborough County; area code 603; Eastern time. Manchester has 8 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
Hillsborough
Coordinates
42.9956, -71.4548

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 03104, whose figures describe that area — not this ZIP code.

☼ Live from 03111 — Manchester, NH

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Where 03111 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 03111
  • 🔢 Type 03111 into a pocket calculator and turn it upside down: IIIEO — not quite a word, sorry.
  • ➕ As a number, 3,111 = 3 × 17 × 61. Its digits add up to 6, a total 90 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110000100111
  • 🏠 Its numerical neighbours: 03110 (Bedford, NH, 6 mi away) and 03215 (Waterville Valley, NH, 74 mi away).
  • 🔄 Backwards, 03111 becomes 11130, which is not a ZIP code at all.
  • 👥 8 other ZIP codes are made of exactly the same digits (10113, 10131, 10311, 11103, 13101, 13110, …). The farthest-flung twin is 31011 in Chauncey, GA, 981 miles away.
  • 🧭 Farther north than 82% of all ZIP codes, and farther east than 95%.
  • 🎯1,416 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03111 and you would come out at 43.00°S, 108.55°E — 861 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 22m of daylight. Shortest: 9h 00m.
🌙 The sky over 03111 today
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Source: USGS.

Land area

ZIP codes near 03111

ZIPCityDistance
03105 Manchester, NH 0.0 mi
03108 Manchester, NH 0.0 mi
03101 Manchester, NH 0.7 mi
03104 Manchester, NH 1.2 mi
03102 Manchester, NH 2.2 mi
03103 Manchester, NH 2.8 mi
03109 Manchester, NH 3.5 mi
03032 Auburn, NH 4.6 mi
03045 Goffstown, NH 5.8 mi
03110 Bedford, NH 5.9 mi

Find every ZIP code within 10 miles of 03111 →

Questions about this ZIP code

Where is ZIP code 03111?

03111 is in Manchester, New Hampshire, in Hillsborough County, part of the Manchester-Nashua, NH metropolitan area. Its published point location is 42.9956, -71.4548.

What county is 03111 in?

03111 lies in Hillsborough County.

What area code is 03111?

Manchester uses area code 603, from NANPA's telephone records.

What time zone is 03111 in?

03111 uses America/New_York.

What ZIP codes are near 03111?

The closest are 03105 (0 mi), 03108 (0 mi), 03101 (0.7 mi), 03104 (1.2 mi) and 03102 (2.2 mi).

Is 03111 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. “03111 ZIP Code — Manchester, New Hampshire (Hillsborough County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03111

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