I would like too give 5 guinea pigs up for adoption how can I get information if the office is closed

You will have to wait till tomorrow, when they are open.

Basically, you'll need to bring the pets to the Receiving entrance of the shelter building on Center street in Tacoma, during business hours. You'll complete paperwork and show your ID. You will owe an animal surrender fee, but if you are unable to pay it, come anyway. Staff will work with you.

Sell them to a pet store😁