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/NORTHFIELD

Northfield ZIP code, Connecticut

The ZIP code for Northfield, CT is 06778, and its area codes are 860 and 959.

USPS city name
1 ZIP code
Population
1,574
Area codes
860, 959

NANPA lists no telephone rate centre for Northfield itself, so these are the area codes of the nearest one, Thomaston (3.4 miles). A town on an area-code boundary can differ from its neighbour.

Northfield in numbers

About 1,574 people live in Northfield, in 530 households. The median household income is $81,375 a year, 15% below the Connecticut median of $95,781 (US: $80,734). The median owner-occupied home is valued at $321,600 (12% below the Connecticut median).

Population1,574Northfield1,574
Households530Northfield530
Median household income$81,375Northfield$81,375Connecticut$95,781US $80,734
Median home value$321,600Northfield$321,600Connecticut$366,900US $332,700

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

ZIP codes addressed as Northfield

ZIP codes with the USPS city name Northfield
ZIP City Type Population Median income Median home
06778 Northfield , CT Standard 1,574 $81,375 $321,600

Map of Northfield ZIP codes

06778

The ZIP codes of Northfield, 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 Northfield

The nearest larger towns are Thomaston (1,988 people, 3.1 mi), Northwest Harwinton (3,088 people, 4.2 mi) and Terryville (5,461 people, 5.7 mi).

Towns near Northfield
TownPopulationDistance
Northwest Harwinton 3,088 4.2 mi
Terryville 5,461 5.7 mi
Torrington 35,547 8.1 mi
Watertown 3,897 8.2 mi
Bristol 61,462 8.8 mi
Oakville 9,276 9.0 mi
Waterbury 114,869 11.6 mi
Collinsville 3,963 11.7 mi
Winsted 6,977 14.5 mi
Naugatuck 31,800 16.2 mi
New Britain 74,223 16.7 mi
Weatogue 2,672 16.7 mi
West Simsbury 3,000 17.2 mi
Heritage Village 4,968 17.4 mi

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

Cite this page

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

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