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/MIDDLEFIELD

Middlefield ZIP code, Connecticut

The ZIP code for Middlefield, CT is 06455.

USPS city name
1 ZIP code
Population
2,480

Middlefield in numbers

About 2,480 people live in Middlefield, in 1,153 households. The median household income is $104,180 a year, 9% above the Connecticut median of $95,781 (US: $80,734). The median owner-occupied home is valued at $388,700 (6% above the Connecticut median).

Population2,480Middlefield2,480
Households1,153Middlefield1,153
Median household income$104,180Middlefield$104,180Connecticut$95,781US $80,734
Median home value$388,700Middlefield$388,700Connecticut$366,900US $332,700

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

ZIP codes addressed as Middlefield

ZIP codes with the USPS city name Middlefield
ZIP City Type Population Median income Median home
06455 Middlefield , CT Standard 2,480 $104,180 $388,700

Map of Middlefield ZIP codes

06455

The ZIP codes of Middlefield, 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 Middlefield

The nearest larger towns are Durham (3,347 people, 3.6 mi), Middletown (47,958 people, 4.0 mi) and Meriden (60,545 people, 4.3 mi).

Towns near Middlefield
TownPopulationDistance
Durham 3,347 3.6 mi
Middletown 47,958 4.0 mi
Meriden 60,545 4.3 mi
Portland 5,944 6.7 mi
Wallingford Center 18,208 6.8 mi
Kensington 9,962 8.1 mi
Northford 6,186 8.9 mi
Cheshire Village 6,172 9.3 mi
Quinnipiac University 4,311 11.2 mi
North Haven 24,336 11.6 mi
New Britain 74,223 11.8 mi
Newington 30,896 12.0 mi
Lake Pocotopaug 4,875 12.7 mi
East Hampton 3,347 12.7 mi

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

Cite this page

zipcodes.pro. “Middlefield, CT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ct/middlefield

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