Baltrum (Low German: Baltrum) is a barrier island off the coast of East Frisia (German: Ostfriesland), in Germany, and is a municipality in the district of Aurich, Lower Saxony. It is located in-between the chain of the seven inhabited East Frisian Islands. Baltrum is the smallest island in this chain by area and inhabitants. It has a land area of 6.5 square kilometres, and a population in (2011) of just over 500 resident inhabitants.
|• Mayor (2020–25)||Harm Olchers (Ind.)|
|• Total||6.50 km2 (2.51 sq mi)|
|Elevation||5 m (16 ft)|
|• Density||92/km2 (240/sq mi)|
|Time zone||UTC+01:00 (CET)|
|• Summer (DST)||UTC+02:00 (CEST)|