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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/06475

06475

ZIP 06475 is Old Saybrook, Connecticut, in Middlesex County; area codes 860 and 959; Eastern time.

Type
Standard
Time zone
America/New_York
County
Middlesex
Metro area
none
Population
10,575
Coordinates
41.2999, -72.3827
☼ Live from 06475 — Old Saybrook, CT

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Where 06475 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 06475
  • 🔢 Type 06475 into a pocket calculator and turn it upside down: SLhgO — not quite a word, sorry.
  • ➕ As a number, 6,475 = 5 × 5 × 7 × 37. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100101001011
  • 🏠 Its numerical neighbours: 06474 (North Westchester, CT, 19 mi away) and 06477 (Orange, CT, 33 mi away).
  • 🔄 Backwards, 06475 becomes 57460 — and that is a real ZIP code: Mansfield, SD, 1,344 miles away.
  • 👥 70 other ZIP codes are made of exactly the same digits (04576, 04657, 04675, 04756, 04765, 05476, …). The farthest-flung twin is 76540 in Killeen, TX, 1,570 miles away.
  • 🧭 Farther north than 69% of all ZIP codes, and farther east than 94%.
  • 🎯1,374 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 06475 and you would come out at 41.30°S, 107.62°E — 790 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 10m of daylight. Shortest: 9h 11m.
  • 📏 At 15.1 square miles of land, 06475 is bigger than 33% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 06475 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,575This ZIP10,575
Households4,672This ZIP4,672
Housing units5,985This ZIP5,985
Median age57.4This ZIP57.4Connecticut41.1US 38.9
Median household income$114,333This ZIP$114,333Connecticut$95,781US $80,734
Median home value$538,200This ZIP$538,200Connecticut$366,900US $332,700
Median gross rent$1,846This ZIP$1,846Connecticut$1,488US $1,413
Bachelor's degree or higher57.8%This ZIP57.8%
Mean commute28.6 minThis ZIP28.6 min
Population density702.2 / sq miThis ZIP702.2 / sq mi

Business and tax activity

Business establishments522This ZIP522
Employees5,206This ZIP5,206
Annual payroll$302,455,000This ZIP$302,455,000
Tax returns filed5,910This ZIP5,910
Total adjusted gross income$1,071,863,000This ZIP$1,071,863,000

Land area

Land area15.06 sq miThis ZIP15.06 sq mi
Water area3.02 sq miThis ZIP3.02 sq mi

Other place names in 06475

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 06475

ZIPCityDistance
06426 Essex, CT 3.6 mi
06442 Ivoryton, CT 3.9 mi
06409 Centerbrook, CT 4.1 mi
06498 Westbrook, CT 5.0 mi
06371 Old Lyme, CT 5.3 mi
06376 South Lyme, CT 6.8 mi
06417 Deep River, CT 6.8 mi
06413 Clinton, CT 7.6 mi
06439 Hadlyme, CT 8.0 mi
06357 Niantic, CT 8.6 mi

Find every ZIP code within 10 miles of 06475 →

Questions about this ZIP code

Where is ZIP code 06475?

06475 is in Old Saybrook, Connecticut, in Middlesex County. Its published point location is 41.2999, -72.3827.

What county is 06475 in?

06475 lies in Middlesex County.

What area code is 06475?

Old Saybrook uses area codes 860 and 959, from NANPA's telephone records.

What time zone is 06475 in?

06475 uses America/New_York.

How many people live in 06475?

About 10,575 people live in ZIP code 06475, in 4,672 households, at 702.2 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 06475?

$114,333 a year, against $95,781 across Connecticut.

What ZIP codes are near 06475?

The closest are 06426 (3.6 mi), 06442 (3.9 mi), 06409 (4.1 mi), 06498 (5 mi) and 06371 (5.3 mi).

Is 06475 a PO Box ZIP code?

06475 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “06475 ZIP Code — Old Saybrook, Connecticut (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/06475

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