If you are writing lets say to an aunt in prison:
Aunt Crazy
c/o Shawshank Prison
123 Jail Lane
Beverly Hills, CA 90210
"Care of" (C/O) is used on the address of a letter (snail mail) when the addressee's exact address is not known, but the address of another person, office, or entity whom the addressee may know or contact IS known. For example, you know your son, who normally lives with you, is temporarily staying with your sister and her family. You know your sister's address. You address a letter to your son "care of" your sister. The postman may not know your son is on his route presently, but with C/O on the letter, he can leave the letter with her for him.
The approach that is more feasible is the use of two addresses. The host has its original address, called the home address, and a temporary address, called the care-of-address.
It is a good idea to use a return address when sending a letter. Oftentimes, the post office will not accept a letter that does not have a return address on it.
Use the address of the school as the to address, and your own home address as the from address.
The inside address is transferred to an envelope as the mailing address. The inside address on a business letter is documentation of where the letter was sent, just as the date on the letter is documentation of when it was sent.
You would address the letter to the person you want it to actually go to and then underneath that you would put c/o "name of person in care of" then the mailing address follows as usual.
Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.Ireland does not use postal codes. Your letter will get there if, after putting the main part of the address, you end the address as follows:Ballinakill,Co. Laois,IrelandFor internet forms, use IE.
If you want to write a letter to the elves, you can address your letter as follows:To: The ElevesCare Of Santa Claus1 Reindeer LaneNorth Pole99705OrTo: The Eleves,Care of Santa ClausNorth PoleH0H 0H0CANADA
The C/O is the person residing at the address. Example: John Smith C/O Pocahontas Rolfe 1234 Notta Real St. Jamestown, VA 58401 The letter is being mailed to Pocahantas' address, but is intended to be given to John Smith. It is in her care to give to him.
Use the prefix of Mrs. if it is a fomal letter. If not, and you are familiar with them, use their first name.
You can address a letter to the board of directors of a condominium association, and use the mailing address of the association. This might be the president's address, or the address of the management company.
"Dear Sir," is all you need to use.