Postcode 18-421
Location: Podlasie → Omza County → Gmina Piatnica
43 location(s) using this postal code in Poland
Counties with postcode 18-421
- Budy Czarnockie
- Budy-Mikołajka
- Choszczewo
- Czarnocin
- Dobrzyjałowo
- Drozdowo
- Drożęcin-Lubiejewo
- Elżbiecin
- Górki-Sypniewo
- Górki-Szewkowo
- Guty
- Jeziorko
- Kałęczyn
- Kalinowo
- Kisielnica
- Kobylin
- Kosaki
- Kownaty
- Krzewo
- Marianowo
- Motyka
- Murawy
- Nagórki
- Niewodowo
- Nowe Krzewo
- Nowy Cydzyn
- Olszyny
- Olszyny-Kolonia
- Pęza
- Piątnica Poduchowna
- Piątnica Włościańska
- Poniat
- Rakowo-Boginie
- Rakowo-Czachy
- Rządkowo
- Stary Cydzyn
- Stary Drożęcin
- Truszki
- Wiktorzyn
- Wyrzyki
- Wyłudzin
- Zabawka
- Żelechy
About Postcode 18-421
This postal code is assigned to Gmina Piatnica Gmina County Omza County, Podlasie, Poland. This location-level postal code helps ensure accurate mail delivery and location identification.
Postal Code Format
Poland uses numeric postal codes with 5 digits (example: 00-001). In our directory, these codes are organized from voivodeships down to gminas.
- 18 — Voivodeship (Podlasie)
- -4 — County (Omza County)
- 21 — Gmina (Gmina Piatnica)
How to Use This Postcode 18-421
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Address format example:
Recipient Name
House #, Street Name
Gmina Piatnica
Omza County, Podlasie
18-421
Poland
Domestic Mail
Include this postcode on all letters and packages sent within Poland.
International Mail
For international deliveries, include "Poland" on the last address line after the postcode.
Frequently Asked Questions
What area does this postcode cover?
This postcode covers Podlasie → Omza County → Gmina Piatnica in Poland.
Is this a valid List Post Code?
Yes. 18-421 is an active postcode for Podlasie → Omza County → Gmina Piatnica in Poland. It follows the 5-character format used in this country.
How do I find the postal code for a specific address?
Search by voivodeship, county, and gmina to find the correct postcode in Poland. Search Postcodes
Found incorrect info for 18-421?
Useful Resources
Developer API
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Free JSON for postcode 18-421.
https://api.listpostcode.com/v1/countries/PL/postcodes/18-421curl -H "x-api-key: YOUR_API_KEY" \
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