Average GPS coordinates for Sebastian Postcode location: 27.789, -80.531. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Sebastian on map:

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Listing cities & postcodes (3):
>> Florida, 32958 Sebastian, Indian River, GPS coordinates: 27.7901,-80.4784
>> Florida, 32976 Sebastian, Brevard, GPS coordinates: 27.8679,-80.5416
>> Florida, 32978 Sebastian, Indian River, GPS coordinates: 27.709,-80.5726