31909 postal code
South KoreaUpdated 2026-11-09대산읍, 충청남도서산시5 digits
Postal code details
1 placeCode
31909
Place
대산읍
Region
충청남도
County
서산시
Coordinates
36.9406, 126.4319
Accuracy
6 / 6
Country
South Korea
Location
OpenStreetMap ↗
36.9406, 126.4319© OpenStreetMap
Ad slot · 300×250
Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| 대산읍 | 충청남도 | 서산시 | 36.9406, 126.4319 |
FAQ
Which city is 31909 in?
대산읍, 충청남도, South Korea.
What are the coordinates of 31909?
36.9406, 126.4319
Is 31909 used in other countries?
Yes, 3 other countries.
Updated 2026-11-09. Attribution in Data & license.