| Cornwallis Sydney, New South Wales |
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| Postcode: | 2756 | ||||||||||||
| Location: | 63.5 km (39 mi) from Sydney CBD | ||||||||||||
| LGA: | City of Hawkesbury | ||||||||||||
| Federal Division: | Macquarie | ||||||||||||
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Cornwallis is a locality of Sydney, in the state of New South Wales, Australia. It is located in the City of Hawkesbury north-west of Windsor.