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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/06403

06403

ZIP 06403 is Beacon Falls, Connecticut, in New Haven County; area codes 203 and 475; Eastern time.

Type
Standard
Time zone
America/New_York
County
New Haven
Metro area
none
Population
6,147
Coordinates
41.4437, -73.0519
☼ Live from 06403 — Beacon Falls, CT

Weather right now

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Where 06403 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 06403
  • 🔢 Type 06403 into a pocket calculator and turn it upside down: EOhgO — not quite a word, sorry.
  • ➕ As a number, 6,403 = 19 × 337. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100000011
  • 🏠 Its numerical neighbours: 06401 (Ansonia, CT, 7 mi away) and 06404 (Botsford, CT, 12 mi away).
  • 🔄 Backwards, 06403 becomes 30460 — and that is a real ZIP code: Statesboro, GA, 787 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (03046, 03064, 03604, 04063, 04360, 04630, …). The farthest-flung twin is 34006 in APO AA, a military post office, 2,283 miles away.
  • 🧭 Farther north than 70% 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 06403 and you would come out at 41.44°S, 106.95°E — 820 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 11m of daylight. Shortest: 9h 10m.
  • 📏 At 9.7 square miles of land, 06403 is bigger than 27% of ZIP codes — room for about 7.3 Central Parks.
🌙 The sky over 06403 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population6,147This ZIP6,147
Households2,649This ZIP2,649
Housing units2,672This ZIP2,672
Median age48.4This ZIP48.4Connecticut41.1US 38.9
Median household income$101,516This ZIP$101,516Connecticut$95,781US $80,734
Median home value$350,300This ZIP$350,300Connecticut$366,900US $332,700
Median gross rent$1,921This ZIP$1,921Connecticut$1,488US $1,413
Bachelor's degree or higher44.6%This ZIP44.6%
Mean commute32.7 minThis ZIP32.7 min
Population density635.6 / sq miThis ZIP635.6 / sq mi

Business and tax activity

Business establishments86This ZIP86
Employees1,091This ZIP1,091
Annual payroll$69,551,000This ZIP$69,551,000
Tax returns filed3,290This ZIP3,290
Total adjusted gross income$297,547,000This ZIP$297,547,000

Land area

Land area9.67 sq miThis ZIP9.67 sq mi
Water area0.12 sq miThis ZIP0.12 sq mi

ZIP codes near 06403

ZIPCityDistance
06770 Naugatuck, CT 3.1 mi
06524 Bethany, CT 3.3 mi
06483 Seymour, CT 4.3 mi
06478 Oxford, CT 5.0 mi
06712 Prospect, CT 5.5 mi
06525 New Haven, CT 6.1 mi
06706 Waterbury, CT 6.3 mi
06762 Middlebury, CT 6.7 mi
06401 Ansonia, CT 6.9 mi
06518 Hamden, CT 7.3 mi

Find every ZIP code within 10 miles of 06403 →

Questions about this ZIP code

Where is ZIP code 06403?

06403 is in Beacon Falls, Connecticut, in New Haven County. Its published point location is 41.4437, -73.0519.

What county is 06403 in?

06403 lies in New Haven County.

What area code is 06403?

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

What time zone is 06403 in?

06403 uses America/New_York.

How many people live in 06403?

About 6,147 people live in ZIP code 06403, in 2,649 households, at 635.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 06403?

$101,516 a year, against $95,781 across Connecticut.

What ZIP codes are near 06403?

The closest are 06770 (3.1 mi), 06524 (3.3 mi), 06483 (4.3 mi), 06478 (5 mi) and 06712 (5.5 mi).

Is 06403 a PO Box ZIP code?

06403 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “06403 ZIP Code — Beacon Falls, Connecticut (New Haven County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06403

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