Average GPS coordinates for Maryland Postcode location: -30.714, 151.831. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Maryland on map:

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Listing cities & postcodes (2):
>> New South Wales, 2287 Maryland, HUNTER, GPS coordinates: -32.8789,151.6614
>> New South Wales, 4377 Maryland, GPS coordinates: -28.55,152