Kostusin, Masovian Voivodeship
| Kostusin | |
|---|---|
| Village | |
| Country |
 Poland
|
| Voivodeship | Masovian |
| County | Mława |
| Gmina | Dzierzgowo |
Kostusin [kɔsˈtuɕin] is a village in the administrative district of Gmina Dzierzgowo, within Mława County, Masovian Voivodeship, in east-central Poland.
Coordinates: 53°06′59″N 20°40′29″E / 53.11639°N 20.67472°E
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