Average GPS coordinates for Potomac Postcode location: 40.309, -87.823. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Potomac on map:
Listing cities & postcodes (1):
>> Illinois, 61865 Potomac, Vermilion, GPS coordinates: 40.309,-87.8232
Listing cities & postcodes (1):
>> Illinois, 61865 Potomac, Vermilion, GPS coordinates: 40.309,-87.8232