Postal Code 89-400 in Chmielniki, Gmina Sępólno Krajeńskie, Powiat sępoleński
Verified postal code reference for 89-400 in Chmielniki, Poland. Includes locality context, administrative hierarchy, and approximate centroid coordinates for validation and integration workflows.
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Geographic & Administrative Context
The postal identifier 89-400 is under the regional jurisdiction of Poland. Within this territory, it is specifically managed as part of the kujawsko-pomorskie » powiat-sepolenski » gmina-sepolno-krajenskie » chmielniki administrative chain, ensuring precise logistical and geographic synchronization with official geocoded registries.