What is 'in care of' (c/o) used for?

'In care of' (c/o) is used when you are sending mail to someone who is temporarily staying at another person's or organization's address. It indicates the person or entity who will receive the mail on behalf of the intended recipient.

When should I use 'in care of'?

Use 'in care of' when the intended recipient does not permanently reside at the address or when you need to ensure delivery through a specific intermediary. This is common for temporary stays, gifts sent to someone at another's address, or when someone is staying in a shared living situation.

What is the correct format for using 'in care of' in an address?

The correct format is to place 'c/o' or 'In care of:' on a separate line above the recipient's name if using an address belonging to another individual. Then include their name. After that the address, city, state and zip code as normal. Example: c/o [Name of Address Holder], [Recipient's Name], [Street Address], [City, State, Zip Code].

Can I use 'in care of' for packages and not just letters?

Yes, 'in care of' can be used for packages as well, although it's crucial to ensure that the person or organization listed 'in care of' is willing and able to receive and hold the package for the intended recipient. Check with the carrier for any additional requirements.

Is 'in care of' necessary if the recipient's name is clearly on the envelope?

Even with the recipient's name on the envelope, using 'in care of' can help prevent misdelivery or return to sender, especially if the recipient is not a regular resident at the address. It provides an extra layer of clarification for the postal service or delivery company.

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Last updated: February 5, 2026•By BasedLabs Team

In care of

Generate accurate and professional 'In Care Of' lines for addressing mail to individuals at temporary or third-party addresses.

Try these examples:

How to use In care of

Steps to get you started in BasedLabs.

Step 1

Enter Recipient Information

Provide the name of the intended recipient.

Begin by accurately entering the full name of the person the mail or package is for. This ensures they are correctly identified when the mail arrives.

Step 2

Enter Address Holder or Organization

Enter the name of the person or organization at the address.

Input the name of the person whose address you will use, and who will be 'in care of' the recipient. Also, input the street address, city, state and zip code.

Step 3

Generate 'In Care Of' Line

Use our tool to generate the correct 'In care of' format.

Click the 'Generate' button, and our tool will create the address with the 'in care of' designation, ready for use on your envelope or shipping label.

Ensure Accurate Delivery

Using 'in care of' clarifies the intended recipient, reducing the risk of mail being returned or delivered to the wrong person, especially in shared living situations or temporary addresses.

Maintain Privacy

Ideal when you need to send mail without revealing the recipient's primary address, such as for gifts or sensitive correspondence.

Save Time and Effort

Avoid the hassle of manually formatting the address; our tool ensures compliance with postal standards for accurate and efficient mail delivery.

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In care of