Postal address
Olszewo, Łomża County
The postal code of Olszewo, in Łomża County (Podlasie, Polonia), is 18-411. Include it in your shipments and forms.
Location
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Olszewo
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Frequently asked questions
What is the postal code of Olszewo?
The main postal code of Olszewo (Łomża County, Polonia) is 18-411.