Embassy of the United States of America  
http://canberra.usembassy.gov/  

• American Citizen Services
• Visa
• Visa waiver program
• non-immigrant visa
• other services

Consulates General 
http://melbourne.usconsulate.gov/melbourne/ 
http://perth.usconsulate.gov/perth/  http://sydney.usconsulate.gov/sydney/ 
 
Virtual Consulates
http://adelaide.usvpp.gov/adelaide/ 
http://brisbane.usvpp.gov/brisbane/
Hobart, Tasmania, comes under Melbourne US Consulate