Hollis OK ZIP Code
Hollis city is located in Oklahoma State, Harmon County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Hollis OK zip code by its streets and block numbers if we have some of the Hollis streets loaded in our website
Hollis Area Code is 580 and Time Zone is Central (GMT -06:00).
Hollis Zip Code - Oklahoma
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Hollis City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Hollis ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Hollis, Oklahoma.
The Hollis Zip Code is 73550.
If you want to send a mail to Hollis City, you should use the 73550 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Hollis 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 73550 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Hollis 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 Oklahoma.