Average GPS coordinates for Cheltenham Postcode location: -33.754, 151.065. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Cheltenham on map:

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Listing cities & postcodes (1):
>> New South Wales, 2119 Cheltenham, GOSFORD, GPS coordinates: -33.7543,151.065