Cairo OH ZIP Code
Cairo city is located in Ohio State, Allen County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Cairo OH zip code by its streets and block numbers if we have some of the Cairo streets loaded in our website
Cairo Area Code is 419 and Time Zone is Eastern (GMT -05:00).
Cairo Zip Code - Ohio
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Cairo City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Cairo ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Cairo, Ohio.
The Cairo Zip Code is 45820.
If you want to send a mail to Cairo City, you should use the 45820 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Cairo 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 45820 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Cairo 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 Ohio.