Use this page to confirm that 18-400
belongs to Stara Łomża Nad Rzeką inside
Poland. For applications, validate the original postal code string
together with the country and administrative hierarchy instead of relying on a global numeric pattern.
Centroid Location: The marker represents the verified geographic centroid for the
18-400 identifier area.
Geographic & Administrative Context
The postal identifier 18-400 is under the
regional jurisdiction of
Poland.
Within this territory, it is specifically managed as part of the
Podlasie » Łomża County » Łomża » Stara Łomża Nad Rzeką administrative chain, ensuring precise logistical and geographic synchronization with official geocoded
registries.
Nearby postal code lookups
Compare 18-400 with adjacent identifiers in
Poland. These links keep the local code range connected without
loading a large directory table.