Average GPS coordinates for Chamberlain Postcode location: 43.756, -99.222. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Chamberlain on map:

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Listing cities & postcodes (2):
>> South Dakota, 57325 Chamberlain, Brule, GPS coordinates: 43.7953,-99.3118
>> South Dakota, 57326 Chamberlain, Brule, GPS coordinates: 43.7172,-99.1317