Harju County

Harju County () is one of the 15 counties of Estonia. It is in northern Estonia. Around 528,468 people live in Harju County. This is about 39.4% of the total population in Estonia (as of January 2011). 
There are a number of protected areas in Harju County. Lahemaa National Park was the first national park in the Soviet Union. There are 21 nature reserves and 25 landscape protection areas, that are at least partly in Harju County. The largest is the Põhja-Kõrvemaa Nature Reserve.
Municipalities.
Harju County is divided into 16 municipalities. Four are urban and 12 are rural.