Average GPS coordinates for Somerville Postcode location: 42.391, -71.106. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Somerville on map:

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Listing cities & postcodes (3):
>> Massachusetts, 02143 Somerville, Middlesex, GPS coordinates: 42.3829,-71.1028
>> Massachusetts, 02144 Somerville, Middlesex, GPS coordinates: 42.4003,-71.1221
>> Massachusetts, 02145 Somerville, Middlesex, GPS coordinates: 42.3907,-71.0929