Average GPS coordinates for Mainland Postcode location: 40.212, -75.356. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Mainland on map:
Listing cities & postcodes (1):
>> Pennsylvania, 19451 Mainland, Montgomery, GPS coordinates: 40.2119,-75.3559
Listing cities & postcodes (1):
>> Pennsylvania, 19451 Mainland, Montgomery, GPS coordinates: 40.2119,-75.3559