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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/06856

06856

ZIP 06856 is in Norwalk, Connecticut, in Fairfield County; area codes 203 and 475; Eastern time. Norwalk has 10 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
Fairfield
Metro area
none
Coordinates
41.1112, -73.4204

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 06850, whose figures describe that area — not this ZIP code.

☼ Live from 06856 — Norwalk, CT

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Where 06856 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 06856
  • 🔢 Type 06856 into a pocket calculator and turn it upside down: gSBgO — not quite a word, sorry.
  • ➕ As a number, 6,856 = 2 × 2 × 2 × 857. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101011001000
  • 🏠 Its numerical neighbours: 06855 (Norwalk, CT, 3 mi away) and 06857 (Norwalk, CT, 14 mi away).
  • 🔄 Backwards, 06856 becomes 65860, which is not a ZIP code at all.
  • 👥 21 other ZIP codes are made of exactly the same digits (05866, 50668, 56068, 56680, 60568, 60586, …). The farthest-flung twin is 85066 in Phoenix, AZ, 2,171 miles away.
  • 🧭 Farther north than 68% of all ZIP codes, and farther east than 92%.
  • 🎯1,321 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 06856 and you would come out at 41.11°S, 106.58°E — 815 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
🌙 The sky over 06856 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments24This ZIP24
Employees3,770This ZIP3,770
Annual payroll$418,763,000This ZIP$418,763,000

Land area

ZIP codes near 06856

ZIPCityDistance
06858 Norwalk, CT 0.2 mi
06854 Norwalk, CT 1.5 mi
06850 Norwalk, CT 1.7 mi
06851 Norwalk, CT 2.1 mi
06855 Norwalk, CT 3.2 mi
06853 Norwalk, CT 3.2 mi
06881 Westport, CT 3.9 mi
06820 Darien, CT 3.9 mi
06889 Westport, CT 4.3 mi
06880 Westport, CT 4.6 mi

Find every ZIP code within 10 miles of 06856 →

Questions about this ZIP code

Where is ZIP code 06856?

06856 is in Norwalk, Connecticut, in Fairfield County. Its published point location is 41.1112, -73.4204.

What county is 06856 in?

06856 lies in Fairfield County.

What area code is 06856?

Norwalk uses area codes 203 and 475, from NANPA's telephone records.

What time zone is 06856 in?

06856 uses America/New_York.

What ZIP codes are near 06856?

The closest are 06858 (0.2 mi), 06854 (1.5 mi), 06850 (1.7 mi), 06851 (2.1 mi) and 06855 (3.2 mi).

Is 06856 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. “06856 ZIP Code — Norwalk, Connecticut (Fairfield County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06856

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/06856.json

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