Siak Postal Codes, Riau Indonesia

Postal codes for Siak range from 28654 to 28773 in Riau, Indonesia. To find exact ZIP codes and postcodes within Siak, choose from the districts listed below.

Districts in Siak

Siak on the Map

The map above highlights the geographic boundaries of the Siak regencies in Indonesia. The postal codes listed on this page correspond to specific towns, villages, and post offices within this area.

What to Know About Siak

Key Facts

Siak is a regency located in the Riau province of Indonesia, situated in the eastern part of Sumatra island along the strategic Siak River. Geographically positioned in the central region of Riau province, Siak borders the Strait of Malacca to the east, making it an important coastal administrative region. The regency covers an area of approximately 8,556 square kilometers and has a population of around 457,940 people according to recent estimates. Siak is administratively divided into 14 districts (kecamatan), which include Siak Sri Indrapura, Sungai Apit, Minas, and several others, each containing multiple villages and urban areas. Historically significant as the former seat of the Siak Sultanate, the region maintains rich cultural heritage while also being part of Riau's important economic corridor, with activities ranging from agriculture to emerging industries. For those seeking detailed location information, postal code data is available for all of Siak's districts and their constituent areas through regional administrative services.

Neighboring Regions

* Pekanbaru City

* Kampar Regency

* Pelalawan Regency

* Bengkalis Regency

* Dumai City