Harwinton CT ZIP Code
Harwinton city is located in Connecticut State, Litchfield County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Harwinton CT zip code by its streets and block numbers if we have some of the Harwinton streets loaded in our website
Harwinton Area Code is 860 and Time Zone is Eastern (GMT -05:00).
Harwinton Zip Code - Connecticut
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Harwinton City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Harwinton ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Harwinton, Connecticut.
The Harwinton Zip Code is 06791.
If you want to send a mail to Harwinton City, you should use the 06791 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Harwinton ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 06791 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Harwinton city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Connecticut.