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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Guilford, CT

Guilford, CT Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 06437StandardNew Haven22,375203 / 475

Timezone(s):Eastern (GMT -05:00)
Counties:NEW HAVEN, CT
Population:22,375 (More Details)
Male Population:10,772
Female Population:11,603
Median Age:47
ZIP Codes:1
Area Codes:2
Total Area:862 square miles (county)
Land Area:604 square miles (county)
Water Area:258 square miles (county)

Guilford, CT Demographic Information *

There is no Census data for the city of GUILFORD, CT. We have pulled information for the ZIP Code 06437 instead.
Total population22,375
Male population10,772
Female population11,603
Median age (years)46.6
White Population21,191
Black Population178
Indian Population14
Asian Population542
Hawaiian Population2
Hispanic Population779
Median age (Male)45.6
Median age (Female)47.5
Total households8,715
Family households (families)6,304
Average household size2.53
Average family size3
Total housing units9,596
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],