Average GPS coordinates for Andover Postcode location: 42.645, -71.118. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Andover on map:

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Listing cities & postcodes (5):
>> Massachusetts, 01810 Andover, Essex, GPS coordinates: 42.6496,-71.1565
>> Massachusetts, 01812 Andover, Essex, GPS coordinates: 42.6472,-71.1842
>> Massachusetts, 01899 Andover, Essex, GPS coordinates: 42.6354,-70.8791
>> Massachusetts, 05501 Andover, Essex, GPS coordinates: 42.6472,-71.1842
>> Massachusetts, 05544 Andover, Essex, GPS coordinates: 42.6472,-71.1842