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/GUILFORD-CENTER

Guilford Center ZIP codes, Connecticut

No ZIP code is named for Guilford Center, CT; addresses there use a neighbouring town's name. The ZIP code covering it is 06437. Its area codes are 203 and 475.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
2,263
Area codes
203, 475

NANPA lists no telephone rate centre for Guilford Center itself, so these are the area codes of the nearest one, Guilford (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Guilford Center in numbers

About 2,263 people live in Guilford Center, in 1,220 households. The median household income is $82,273 a year, 14% below the Connecticut median of $95,781 (US: $80,734). The median owner-occupied home is valued at $582,400 (59% above the Connecticut median), and median gross rent is $1,598 a month. The median age is 54.3; 52.7% of adults 25 and over hold a bachelor's degree or higher (42.5% across Connecticut); the average commute takes 25 minutes.

Population2,263Guilford Center2,263
Households1,220Guilford Center1,220
Median age54.3Guilford Center54.3Connecticut41.1US 38.9
Median household income$82,273Guilford Center$82,273Connecticut$95,781US $80,734
Median home value$582,400Guilford Center$582,400Connecticut$366,900US $332,700
Median gross rent$1,598Guilford Center$1,598Connecticut$1,488US $1,413
Bachelor's degree or higher52.7%Guilford Center52.7%Connecticut42.5%US 35.7%
Mean commute25.3 minGuilford Center25.3 minConnecticut26.5 minUS 26.4 min
Population density1,037 / sq miGuilford Center1,037 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Guilford Center CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering Guilford Center

These ZIP codes cover part of Guilford Center but are addressed as somewhere else.

ZIP codes overlapping Guilford Center
ZIP City Type Population Median income Median home
06437 Guilford , CT Standard 22,067 $137,615 $515,000

Map of Guilford Center ZIP codes

06437

The ZIP codes of Guilford Center, 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 Guilford Center

The nearest larger towns are Branford Center (6,305 people, 7.3 mi), Clinton (3,465 people, 7.6 mi) and East Haven (27,806 people, 9.5 mi).

Towns near Guilford Center
TownPopulationDistance
Branford Center 6,305 7.3 mi
Clinton 3,465 7.6 mi
East Haven 27,806 9.5 mi
Northford 6,186 9.7 mi
North Haven 24,336 11.7 mi
Westbrook Center 2,501 12.1 mi
Durham 3,347 13.0 mi
New Haven 134,349 13.1 mi
Wallingford Center 18,208 13.8 mi
Quinnipiac University 4,311 14.8 mi
West Haven 55,351 15.1 mi
Essex Village 2,705 15.6 mi
Orange 14,315 18.1 mi
Middletown 47,958 18.6 mi

More nearby: every ZIP code in New Haven County · Connecticut ZIP codes

Cite this page

zipcodes.pro. “Guilford Center, CT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ct/guilford-center

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