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 — CITY/CT/OLD-SAYBROOK

Old Saybrook ZIP code, Connecticut

The ZIP code for Old Saybrook, CT is 06475, and its area codes are 860 and 959.

USPS city name
1 ZIP code
Population
10,575
Area codes
860, 959

Old Saybrook in numbers

About 10,575 people live in Old Saybrook, in 4,672 households. The median household income is $114,333 a year, 19% above the Connecticut median of $95,781 (US: $80,734). The median owner-occupied home is valued at $538,200 (47% above the Connecticut median).

Population10,575Old Saybrook10,575
Households4,672Old Saybrook4,672
Median household income$114,333Old Saybrook$114,333Connecticut$95,781US $80,734
Median home value$538,200Old Saybrook$538,200Connecticut$366,900US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Old Saybrook. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Old Saybrook

ZIP codes with the USPS city name Old Saybrook
ZIP City Type Population Median income Median home
06475 Old Saybrook , CT Standard 10,575 $114,333 $538,200

Map of Old Saybrook ZIP codes

The ZIP codes of Old Saybrook, CT, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Old Saybrook

The nearest larger towns are New London (27,625 people, 15 mi), Middletown (47,958 people, 22 mi) and Norwich (39,973 people, 23 mi).

Towns near Old Saybrook
TownPopulationDistance
Westbrook Center 2,501 3.3 mi
Essex Village 2,705 4.0 mi
Clinton 3,465 7.8 mi
Niantic 3,123 9.6 mi
Waterford 3,304 13.5 mi
Greenport, NY 2,574 13.7 mi
New London 27,625 15.0 mi
Southold, NY 6,397 16.4 mi
Groton 9,490 16.5 mi
Oxoboxo River 2,782 16.6 mi
Long Hill 4,399 17.6 mi
Conning Towers-Nautilus Park 8,460 17.7 mi
Colchester 4,692 19.4 mi
Durham 3,347 19.5 mi

More nearby: every ZIP code in Middlesex County · Connecticut ZIP codes

Cite this page

zipcodes.pro. “Old Saybrook, CT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ct/old-saybrook

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