31903 postal code
South KoreaUpdated 2026-11-09대산읍, 충청남도서산시5 digits
Postal code details
1 placeCode
31903
Place
대산읍
Region
충청남도
County
서산시
Coordinates
37.0069, 126.4192
Accuracy
6 / 6
Country
South Korea
Location
OpenStreetMap ↗
37.0069, 126.4192© OpenStreetMap
Ad slot · 300×250
Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| 대산읍 | 충청남도 | 서산시 | 37.0069, 126.4192 |
FAQ
Which city is 31903 in?
대산읍, 충청남도, South Korea.
What are the coordinates of 31903?
37.0069, 126.4192
Is 31903 used in other countries?
Yes, 3 other countries.
Updated 2026-11-09. Attribution in Data & license.