Average GPS coordinates for Halloran Postcode location: -33.193, 151.386. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Halloran on map:

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Listing cities & postcodes (1):
>> New South Wales, 2259 Halloran, PYMBLE, GPS coordinates: -33.1934,151.3862