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How to Address an Envelope Using C/O

When sending mail to someone who has another primary address but wishes to accept mail at a different address, the envelope must be addressed with an "In Care Of" line, most often abbreviated "C/O." The "In Care Of" line includes the name of a primary resident or the primary entity at an address. If the intended recipient is staying with a relative, for instance, the relative's name would be used; if it's a hotel or hospital, that name would appear in the "C/O" line.

Instructions

- 1
  Write the addressee's full name near the center of the front of the envelope. This is the first line of the address.
- 2
  On the next line, write "C/O" and the full name of a person who is a primary resident at the mailing address, or write the name of the business or entity at the location.
- 3
  Add the street number and street name on the next line.
- 4
  Write the city, state abbreviation and ZIP code on the fourth line.
- 5
  Write the name and full address of the sender in the top left corner of the envelope.

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