Postal address
Janczewo, Łomża County
The postal code of Janczewo, in Łomża County (Podlasie, Polonia), is 18-420. Include it in your shipments and forms.
Location
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Janczewo
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Frequently asked questions
What is the postal code of Janczewo?
The main postal code of Janczewo (Łomża County, Polonia) is 18-420.