US-Australia Sister City Relationships

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The United States and Australia have 62 city or county sister relationships, and 3 sister state relationships. Sister relationships are municipal partnerships between cities, counties, and states with similar jurisdictions that work to build civic and people-to-people relationships and support commercial ties. California has 19 sister cities relationships with Australia – the most of any US state. New South Wales has the most sister relationships of any Australian state with 29, followed by Victoria with 12.

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US Sister Relationships with Australia 

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Australian Sister Relationships with the US 

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US Sister Relationships with Australia