Bill gates working mailing address

Bill Gates' working mailing address is:

Bill Gates Bill & Melinda Gates Foundation P.O. Box 90016 Seattle, WA 98109-0016

However, please note that this is a general mailing address for the foundation, and it's not a personal address for Bill Gates. If you're looking to contact him directly, it's best to reach out through the foundation's official channels or his publicist.

Additionally, you can also contact the Bill & Melinda Gates Foundation through their website, which provides a contact form and other ways to get in touch with them.

It's worth noting that Bill Gates is a private individual, and his personal contact information is not publicly available.