How to Write a Connecticut Address (With Examples)

Address basics  |   |  2 min read

Writing a Connecticut address correctly comes down to three things: the right street format, the two-letter code CT and a ZIP code that matches the city.

The standard format

RECIPIENT NAME STREET NUMBER AND NAME, UNIT CITY, CT ZIP CODE

The state is always written as CT, two capital letters with no periods. USPS prefers the city, state and ZIP on the same final line.

Example: Hartford

Grace Kim 1695 Maple Dr Hartford, CT 06152

Example with an apartment in Hartford

Wei Hill 703 Willow Ln Apt 20 Hartford, CT 06120

Example with a PO Box

Noah Patel PO Box 1691 Hartford, CT 06120

PO Boxes often have their own ZIP code, separate from street addresses in the same town. Check the ZIP with the post office that holds the box.

Common mistakes

  • Mixing up CT with CO (Colorado). These codes look similar and cause misrouted mail.
  • Writing the full state name or an old abbreviation instead of CT.
  • Dropping the leading zero from the ZIP code in spreadsheets.
  • Putting the apartment number on a line below the street address.
  • Using a ZIP code from a neighboring city. One city can have many codes, but each street belongs to a specific one.

Counties and local details

Connecticut is divided into 8 counties. The county does not appear in a mailing address, but it matters for sales tax, elections and some shipping rules, so many business systems store it separately.

Create realistic Connecticut addresses for testing, with real cities, counties and ZIP codes.

Generate Connecticut addresses