Average GPS coordinates for San Carlos Postcode location: 18.483, -69.9. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Carlos on map:

---

Listing cities & postcodes (2):
>> 10216 San Carlos, GPS coordinates: 18.4833,-69.9
>> 10217 San Carlos, GPS coordinates: 18.4833,-69.9