South Korea

33657 post code

Post code details

1 place

Code

Place

마서면

Region

충청남도

County

서천군

Coordinates

36.0256, 126.7256

Accuracy

6 / 6

Country

South Korea

Location

OpenStreetMap ↗

36.0256, 126.7256© OpenStreetMap

Places under this code

Place	Region	County	Coordinates
마서면	충청남도	서천군	36.0256, 126.7256

Nearby codes

All →

33637 33638 33639 33640 33641 33642 33643 33644 33645 33646 33647 33648

Same code in other countries

This code only appears in this country.

FAQ

Which city is 33657 in?

마서면, 충청남도, South Korea.

What are the coordinates of 33657?

36.0256, 126.7256

Is 33657 used in other countries?

No.

The data is unofficial and has known truncation; verify with the recipient and carrier for critical shipments. See data source & license → · Updated 2026-11-09. Attribution in