title: Olszewka, Ostrołęka County
text: # Olszewka, Ostrołęka County
  
  Olszewka is a village in the administrative district of Gmina Lelis, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) south-west of Lelis, 11 km (7 mi) north-west of Ostrołęka, and 107 km (66 mi) north of Warsaw.
  
  