Hostelling international usa mailing address

The mailing address for Hostelling International USA (HI USA) is:

Hostelling International USA 1331 Pennsylvania Avenue NW, Suite 500 Washington, DC 20004

You can also contact HI USA through their website at www.hiusa.org or by phone at (202) 783-6161.

Note that HI USA has a national office in Washington, D.C., but they also have regional offices and hostels located throughout the United States. If you're looking for a specific hostel or regional office, you can find their contact information on the HI USA website.