Average GPS coordinates for Petaluma Postcode location: 38.358, -122.82. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Petaluma on map:

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Listing cities & postcodes (6):
>> California, 94952 Petaluma, Sonoma, GPS coordinates: 38.2403,-122.6777
>> California, 94953 Petaluma, Sonoma, GPS coordinates: 38.4631,-122.99
>> California, 94954 Petaluma, Sonoma, GPS coordinates: 38.2507,-122.6155
>> California, 94955 Petaluma, Sonoma, GPS coordinates: 38.4631,-122.99
>> California, 94975 Petaluma, Sonoma, GPS coordinates: 38.4631,-122.99
>> California, 94999 Petaluma, Sonoma, GPS coordinates: 38.2675,-122.6581