Average GPS coordinates for Madison Postcode location: 32.555, -90.1. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Madison on map:

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Listing cities & postcodes (2):
>> Mississippi, 39110 Madison, Madison, GPS coordinates: 32.4671,-90.1087
>> Mississippi, 39130 Madison, Madison, GPS coordinates: 32.6424,-90.0907