Average GPS coordinates for Downey Postcode location: 33.902, -118.172. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Downey on map:

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Listing cities & postcodes (4):
>> California, 90239 Downey, Los Angeles, GPS coordinates: 33.7866,-118.2987
>> California, 90240 Downey, Los Angeles, GPS coordinates: 33.9581,-118.1174
>> California, 90241 Downey, Los Angeles, GPS coordinates: 33.9416,-118.1306
>> California, 90242 Downey, Los Angeles, GPS coordinates: 33.9218,-118.1395