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/06703

06703

ZIP 06703 is in Waterbury, Connecticut, in New Haven County; area codes 203 and 475; Eastern time. Waterbury has 16 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
New Haven
Metro area
none
Coordinates
41.5582, -73.0515

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 06702, whose figures describe that area — not this ZIP code.

☼ Live from 06703 — Waterbury, CT

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Where 06703 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 06703
  • 🔢 Type 06703 into a pocket calculator and turn it upside down: EOLgO — not quite a word, sorry.
  • ➕ 06703 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101000101111
  • 🏠 Its numerical neighbours: 06702 (Waterbury, CT, 0 mi away) and 06704 (Waterbury, CT, 2 mi away).
  • 🔄 Backwards, 06703 becomes 30760, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (00637, 00736, 03076, 03607, 06037, 06073, …). The farthest-flung twin is 00736 in Cayey, PR, 1,671 miles away.
  • 🧭 Farther north than 71% of all ZIP codes, and farther east than 93%.
  • 🎯1,338 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 06703 and you would come out at 41.56°S, 106.95°E — 826 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 11m of daylight. Shortest: 9h 10m.
🌙 The sky over 06703 today
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Source: USGS.

Land area

ZIP codes near 06703

ZIPCityDistance
06701 Waterbury, CT 0.0 mi
06720 Waterbury, CT 0.0 mi
06721 Waterbury, CT 0.0 mi
06722 Waterbury, CT 0.0 mi
06723 Waterbury, CT 0.0 mi
06724 Waterbury, CT 0.0 mi
06725 Waterbury, CT 0.0 mi
06726 Waterbury, CT 0.0 mi
06749 Waterbury, CT 0.0 mi
06702 Waterbury, CT 0.3 mi

Find every ZIP code within 10 miles of 06703 →

Questions about this ZIP code

Where is ZIP code 06703?

06703 is in Waterbury, Connecticut, in New Haven County. Its published point location is 41.5582, -73.0515.

What county is 06703 in?

06703 lies in New Haven County.

What area code is 06703?

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

What time zone is 06703 in?

06703 uses America/New_York.

What ZIP codes are near 06703?

The closest are 06701 (0 mi), 06720 (0 mi), 06721 (0 mi), 06722 (0 mi) and 06723 (0 mi).

Is 06703 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. “06703 ZIP Code — Waterbury, Connecticut (New Haven County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06703

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/06703.json

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